Elementary School Science Quiz: Predict Collision Outcomes
20 questions · exam conditions
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Predict Collision OutcomesQuestion 1 of 20

Jamal rolls a heavy bowling ball straight toward 10 pins; after the collision, what will happen to the pins?

Most pins will fall and scatter, and the ball will keep rolling slower.
No pins will fall, and the ball will bounce backward to Jamal.
All pins will fly far away, and the ball will roll faster than before.
The ball will stop instantly, and all pins will stay standing in place.
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Elementary School Science Quiz

Elementary School Science Quiz: Predict Collision Outcomes

Practice Predict Collision Outcomes in Elementary School Science with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Predict Collision Outcomes, giving you a quick way to practice the rules, question types, and explanations that matter most for Elementary School Science.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

Jamal rolls a heavy bowling ball straight toward 10 pins; after the collision, what will happen to the pins?

  1. Most pins will fall and scatter, and the ball will keep rolling slower. (correct answer)
  2. No pins will fall, and the ball will bounce backward to Jamal.
  3. All pins will fly far away, and the ball will roll faster than before.
  4. The ball will stop instantly, and all pins will stay standing in place.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a heavy bowling ball rolls straight toward 10 stationary pins. Before collision: the bowling ball has more energy because it's heavy and rolling. After collision: energy will transfer from the ball to the pins. We predict: the ball will slow down and the pins will scatter. The heavier object transfers energy to the lighter pins. Choice A is correct because it predicts most pins will fall and scatter and the ball will keep rolling slower, which matches energy transfer principles. When the moving heavy ball hits the stationary pins, energy must transfer, so the pins will start moving and the ball will slow down. This prediction accounts for the sizes given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice D is incorrect because it predicts the ball will stop instantly and all pins will stay standing, which violates energy conservation by ignoring energy transfer. This error occurs when students think energy disappears or don't understand transfer. In reality, energy must transfer to the stationary objects, causing motion in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 2

Yuki rolls a fast toy car into a soft foam block on a rough carpet; what will happen after collision?

  1. The car will slow down a lot, and the foam block will move forward a short distance. (correct answer)
  2. The car will keep the same speed, and the foam block will not move.
  3. The foam block will move farther than the car, and the car will speed up.
  4. Both will bounce backward quickly and roll the same distance.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a fast toy car rolls into a soft stationary foam block on rough carpet. Before collision: the car has more energy because it's fast and likely heavier. After collision: energy will transfer from the car to the foam block. We predict: the car will slow down a lot and the foam block will move forward a short distance. The faster/heavier object transfers energy to the lighter/soft one. Choice A is correct because it predicts the car will slow down a lot, and the foam block will move forward a short distance, which matches energy transfer principles. When the moving car hits the stationary foam, energy must transfer, so the foam will start moving and the car will slow down. This prediction accounts for the speed, softness, and rough surface and follows the rule that energy transfers from moving to stationary objects during collisions. Choice B is incorrect because it predicts the car will keep the same speed and the foam will not move, which ignores energy transfer. This error occurs when students don't understand transfer. In reality, energy must transfer to the stationary object, causing motion in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 3

Two toy cars roll toward each other on a smooth table; a fast heavy car meets a slow light car—what will happen?

  1. Both cars will stop completely and stay stuck without moving.
  2. The heavy fast car will keep going, and the light slow car will move back. (correct answer)
  3. The light slow car will push the heavy fast car backward, and keep going.
  4. Both cars will turn sideways and roll the same speed in opposite directions.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a fast heavy toy car rolls toward a slow light toy car head-on. Before collision: the heavy car has more energy because it's faster and heavier. After collision: energy will transfer from the heavy to the light. We predict: the heavy will keep going and the light will move back. The faster heavier object transfers energy to the lighter object. Choice B is correct because it predicts the heavy fast car will keep going and the light slow car will move back, which matches energy transfer principles. When the heavy car hits the light car, energy must transfer, so the light car will start moving back and the heavy car will continue. This prediction accounts for the speeds and sizes given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice A is incorrect because it predicts both cars will stop completely and stay stuck, which ignores energy transfer and has impossible result. This error occurs when students think energy disappears or predict impossible outcomes. In reality, energy must be conserved and cause motion in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 4

On a rough carpet, a small marble rolls slowly right into a larger still marble; what will happen after they collide?

  1. The small marble will slow or stop, and the large marble may move a little right. (correct answer)
  2. The small marble will speed up, and the large marble will shoot far right quickly.
  3. The large marble will move left fast, and the small marble will keep rolling right faster.
  4. Both marbles will keep the same motion as before, with no change at all.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a small marble rolls slowly right into a larger still marble on rough carpet. Before collision: the small marble has low energy because it's slow and lighter. After collision: energy will transfer from the small to the large. We predict: the small will slow or stop and the large may move a little right. The smaller slower object transfers limited energy to the heavier. Choice A is correct because it predicts the small marble will slow or stop and the large marble may move a little right, which matches energy transfer principles. When the moving small marble hits the stationary large marble, energy must transfer, so the large may start moving slightly and the small will slow or stop. This prediction accounts for the speeds and sizes given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice B is incorrect because it predicts the small marble will speed up and the large marble will shoot far right quickly, which violates energy conservation with impossible result. This error occurs when students ignore relative speeds or sizes. In reality, energy must be conserved and limited by the moving object's low energy. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 5

Fatima slides a hockey puck fast into a stopped puck on smooth ice; what will happen after collision?

  1. The moving puck will slow down, and the stopped puck will start moving forward. (correct answer)
  2. The moving puck will speed up, and the stopped puck will stay still.
  3. Both pucks will stop instantly and never move again.
  4. The stopped puck will move backward, and the moving puck will not change.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a fast-moving hockey puck slides into a stopped puck on smooth ice. Before collision: the moving puck has more energy because it's fast. After collision: energy will transfer from the moving puck to the stopped one. We predict: the moving puck will slow down and the stopped puck will start moving forward. The faster object transfers energy to the stationary one. Choice A is correct because it predicts the moving puck will slow down, and the stopped puck will start moving forward, which matches energy transfer principles. When the moving puck hits the stationary one, energy must transfer, so the stopped puck will start moving and the moving puck will slow down. This prediction accounts for the speed and smooth surface and follows the rule that energy transfers from moving to stationary objects during collisions. Choice C is incorrect because it predicts both pucks will stop instantly, which violates energy conservation by ignoring energy transfer. This error occurs when students think energy disappears. In reality, energy must transfer to the stationary object, causing motion in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 6

Jamal's fast toy car goes right and hits Sofia's stopped toy car; what will happen to both cars?

  1. Jamal's car will slow down, and Sofia's car will start moving to the right. (correct answer)
  2. Jamal's car will speed up, and Sofia's car will stay still.
  3. Both cars will stop completely and stay stopped.
  4. Sofia's car will move left, and Jamal's car will keep moving right unchanged.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, Jamal's fast toy car moving right hits Sofia's stationary toy car. Before collision: Jamal's car has more energy because it's moving fast. After collision: energy will transfer from Jamal's car to Sofia's. We predict: Jamal's car will slow down and Sofia's car will start moving right. The faster object transfers energy to the stationary object. Choice A is correct because it predicts Jamal's car will slow down and Sofia's car will start moving to the right, which matches energy transfer principles. When the moving car hits the stationary one, energy must transfer, so the stationary car will start moving and the moving car will slow down. This prediction accounts for the speed and direction given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice C is incorrect because it predicts both cars will stop completely, which violates energy conservation by ignoring energy transfer. This error occurs when students think energy disappears. In reality, energy must transfer to the stationary object, causing motion in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 7

Marcus rolls a small marble slowly into a large still marble; what will happen after they collide?

  1. The small marble will slow or bounce back, and the large marble will move a little forward. (correct answer)
  2. The small marble will stop, and the large marble will shoot forward very fast.
  3. The large marble will stay still, and the small marble will pass through it.
  4. Both marbles will speed up and roll forward faster than before.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a small marble rolling slowly hits a large stationary marble. Before collision: the small marble has less energy because it's small and slow, while the large is heavier. After collision: energy will transfer from the small to the large. We predict: the small marble will slow or bounce back and the large marble will move a little forward. The smaller/slower object transfers energy but rebounds from the heavier one. Choice A is correct because it predicts the small marble will slow or bounce back, and the large marble will move a little forward, which matches energy transfer principles. When the moving small marble hits the stationary large one, energy must transfer, so the large will start moving slightly and the small may rebound. This prediction accounts for the sizes and slow speed and follows the rule that energy transfers from moving to stationary objects during collisions. Choice B is incorrect because it predicts the small will stop and the large will shoot forward very fast, which has the wrong outcome by ignoring relative masses. This error occurs when students ignore relative sizes. In reality, energy must transfer but the heavier object moves less. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 8

Two toy cars collide head-on: Chen's car is faster than Amir's; which way will they move after?

  1. They will move in Amir's direction because his car is in front.
  2. They will move in Chen's direction because his car has more moving energy. (correct answer)
  3. They will both stop and not move at all after the crash.
  4. They will both turn sideways and roll away in opposite directions.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this head-on collision, Chen's faster toy car hits Amir's slower one coming from the opposite direction. Before collision: Chen's car has more energy because it's moving faster. After collision: energy will transfer more from Chen's to Amir's. We predict: both will move in Chen's direction after the crash. The faster object transfers more energy to the slower one. Choice B is correct because it predicts they will move in Chen's direction because his car has more moving energy, which matches energy transfer principles. When the faster car hits the slower one head-on, energy must transfer, so the net motion will be in the direction of the car with more energy. This prediction accounts for the relative speeds given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice C is incorrect because it predicts both will stop and not move, which violates energy conservation by ignoring energy transfer. This error occurs when students don't understand transfer. In reality, energy must be conserved and cause motion in the direction of the greater energy. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 9

Two toy cars roll the same direction; a faster car bumps a slower car from behind—what will happen after collision?

  1. The faster car will slow down, and the slower car will speed up forward. (correct answer)
  2. The faster car will speed up, and the slower car will stop instantly.
  3. The slower car will move backward, and the faster car will keep its speed.
  4. Both cars will stop completely and stay still right after the bump.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a faster toy car bumps a slower toy car from behind in the same direction. Before collision: the faster car has more energy because of its speed. After collision: energy will transfer from the faster to the slower. We predict: the faster will slow down and the slower will speed up forward. The faster object transfers energy to the other. Choice A is correct because it predicts the faster car will slow down and the slower car will speed up forward, which matches energy transfer principles. When the faster car hits the slower car, energy must transfer, so the slower car will gain speed and the faster car will slow down. This prediction accounts for the speeds given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice D is incorrect because it predicts both cars will stop completely and stay still, which violates energy conservation by ignoring energy transfer. This error occurs when students think energy disappears or don't understand transfer. In reality, energy must transfer, causing changes in speed in the direction of motion. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 10

Sofia swings one pendulum ball to hit a line of equal hanging balls; after the collision, what will happen?

  1. The swung ball will stop, and one ball on the far end will swing out. (correct answer)
  2. The swung ball will stop, and all the balls will swing out together.
  3. The swung ball will keep swinging through, and the far end will not move.
  4. The swung ball will bounce back, and two far-end balls will swing out.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, one pendulum ball swings to hit a line of equal hanging balls. Before collision: the swung ball has energy from its motion. After collision: energy will transfer through the line to the far end. We predict: the swung will stop and one far end will swing out. The moving object transfers energy to the line. Choice A is correct because it predicts the swung ball will stop and one ball on the far end will swing out, which matches energy transfer principles. When the moving ball hits the stationary line, energy must transfer, so the far ball will start moving and the swung ball will stop. This prediction accounts for the setup given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice D is incorrect because it predicts the swung ball will bounce back and two far-end balls will swing out, which has wrong outcome for energy transfer. This error occurs when students ignore the equal masses or predict impossible results. In reality, energy must transfer to the far object, causing it to move in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 11

On a smooth floor, a large marble rolls fast right toward a small still marble; when they collide, what will happen?

  1. The large marble will stop, and the small marble will not move at all.
  2. The large marble will slow down, and the small marble will move right. (correct answer)
  3. The large marble will speed up, and the small marble will move left.
  4. The large marble will keep the same speed, and the small marble will stay still.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a large marble rolling fast right hits a stationary small marble. Before collision: the large marble has more energy because it's moving fast and is heavier. After collision: energy will transfer from the large to the small. We predict: the large will slow down and the small will start moving right. The faster heavier object transfers energy to the smaller object. Choice B is correct because it predicts the large marble will slow down and the small marble will move right, which matches energy transfer principles. When the moving large marble hits the stationary small marble, energy must transfer, so the small marble will start moving right and the large marble will slow down. This prediction accounts for the speeds and sizes given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice A is incorrect because it predicts the large marble will stop and the small marble will not move at all, which violates energy conservation by ignoring energy transfer. This error occurs when students think energy disappears or don't understand transfer. In reality, energy must transfer to the stationary object, causing it to move in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 12

Maya kicks a soccer ball fast toward a still basketball; when they collide, what will happen to both balls?

  1. The soccer ball will slow down, and the basketball will start moving forward. (correct answer)
  2. The soccer ball will stop, and the basketball will stay still.
  3. The soccer ball will move backward fast, and the basketball will move forward faster.
  4. The soccer ball will keep the same speed, and the basketball will not move.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a soccer ball kicked fast hits a stationary basketball. Before collision: the soccer ball has high energy because it's moving fast. After collision: energy will transfer from the soccer to the basketball. We predict: the soccer will slow down and the basketball will start moving forward. The faster object transfers energy to the other object. Choice A is correct because it predicts the soccer ball will slow down and the basketball will start moving forward, which matches energy transfer principles. When the moving soccer ball hits the stationary basketball, energy must transfer, so the basketball will start moving and the soccer ball will slow down. This prediction accounts for the speeds given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice C is incorrect because it predicts the soccer ball will move backward fast and the basketball will move forward faster, which has wrong direction for the soccer ball. This error occurs when students ignore relative sizes or predict impossible outcomes. In reality, energy must transfer to the stationary object, causing motion in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 13

Amir rolls a heavy bowling ball straight toward a tight group of pins. After the collision, what will happen to the ball and most pins?​

  1. The ball will stop instantly, and all pins will stay standing in place.
  2. The ball will bounce straight back fast, and the pins will move toward it.
  3. The ball will slow down, and many pins will fall and scatter outward. (correct answer)
  4. The ball will speed up, and the pins will fall only straight forward.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a heavy bowling ball rolls straight toward a tight group of pins. Before collision: the heavy ball has high energy because it's moving and is heavy. After collision: energy will transfer from the ball to multiple pins. We predict: the ball will slow down and many pins will fall and scatter outward. The heavy ball transfers energy to the pins, causing them to move in various directions. Choice C is correct because it predicts the ball will slow down and many pins will fall and scatter outward, which matches energy transfer principles. When a heavy moving object hits multiple lighter objects, energy transfers to all contacted objects, causing them to scatter. This prediction accounts for the mass difference and follows the rule that energy transfers from the moving ball to the stationary pins. Choice A is incorrect because it predicts the ball will stop instantly and all pins will stay standing, which violates energy transfer principles. This error occurs when students think the ball's energy disappears. In reality, energy must transfer to the pins, causing them to move and fall. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 14

A Newton's cradle has 5 same-size balls touching. When Marcus lifts and releases 2 balls together, how many balls will swing out on the other side?​

  1. One ball will swing out, and the two lifted balls will keep swinging forward.
  2. Two balls will swing out, and the lifted two balls will slow down. (correct answer)
  3. All five balls will swing out, and none will stay in the middle.
  4. No balls will swing out, and the middle balls will absorb all energy.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, Marcus lifts and releases 2 balls together in a Newton's cradle with 5 same-size balls touching. Before collision: the two lifted balls have energy from being raised. After collision: energy will transfer through the touching balls to the other end. We predict: 2 balls will swing out on the other side (equal to the number lifted) and the lifted balls will slow down after transferring their energy. The energy transfers through the middle balls to push out an equal number on the other side. Choice B is correct because it predicts two balls will swing out and the lifted two balls will slow down, which matches energy transfer principles. When two balls hit the row, energy transfers through the touching balls and pushes out the same number on the other side. This prediction accounts for conservation of energy and momentum in the Newton's cradle system. Choice C is incorrect because it predicts all five balls will swing out, which violates energy conservation. This error occurs when students don't understand that the energy from two balls can only push out two balls of equal mass. In reality, energy and momentum must be conserved, so the same number of balls swing out as were lifted. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 15

Maya rolls a heavy bowling ball down a lane into pins; what will happen to the pins after collision?

  1. Most pins will fall and scatter, and the ball will keep rolling slower. (correct answer)
  2. No pins will move because the pins are standing still.
  3. The ball will bounce backward, and the pins will stay standing.
  4. All pins will fly the same distance, and the ball will stop instantly.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a heavy bowling ball rolling down the lane hits stationary pins. Before collision: the ball has more energy because it's heavy and moving. After collision: energy will transfer from the ball to the pins. We predict: the ball will slow down and the pins will scatter. The heavier object transfers energy to the lighter pins. Choice A is correct because it predicts most pins will fall and scatter, and the ball will keep rolling slower, which matches energy transfer principles. When the moving ball hits the stationary pins, energy must transfer, so the pins will start moving and the ball will slow down. This prediction accounts for the weight and setup given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice B is incorrect because it predicts no pins will move, which ignores energy transfer. This error occurs when students think energy disappears. In reality, energy must transfer to the stationary objects, causing motion in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 16

On a pool table, Carlos hits one moving ball into two touching still balls; what will happen after collision?

  1. The moving ball will stop or slow, and one or both still balls will roll away. (correct answer)
  2. The moving ball will keep its speed, and the two still balls will not move.
  3. All three balls will stop forever because they touched at the same time.
  4. Both still balls will roll toward the moving ball, and it will speed up.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, one moving pool ball hits two touching stationary balls. Before collision: the moving ball has energy because it's moving. After collision: energy will transfer from the moving ball to the still ones. We predict: the moving ball will stop or slow, and one or both still balls will roll away. The moving object transfers energy to the stationary ones. Choice A is correct because it predicts the moving ball will stop or slow, and one or both still balls will roll away, which matches energy transfer principles. When the moving ball hits the stationary ones, energy must transfer, so the still balls will start moving and the moving ball will slow down. This prediction accounts for the setup and follows the rule that energy transfers from moving to stationary objects during collisions. Choice B is incorrect because it predicts the moving ball will keep its speed and the still balls will not move, which ignores energy transfer. This error occurs when students don't understand transfer. In reality, energy must transfer to the stationary objects, causing motion in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 17

Diego gently kicks a soccer ball into a still basketball; what will happen to both balls after collision?

  1. The soccer ball will slow or bounce back, and the basketball will start moving forward. (correct answer)
  2. The soccer ball will stop, and the basketball will stay still.
  3. The basketball will move faster than the soccer ball, and the soccer ball will speed up.
  4. Both balls will move backward together in the opposite direction.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a gently kicked soccer ball hits a stationary basketball. Before collision: the soccer ball has energy but the basketball is likely heavier. After collision: energy will transfer from the soccer ball to the basketball. We predict: the soccer ball will slow or bounce back and the basketball will start moving forward. The lighter or slower object transfers energy but may rebound from the heavier one. Choice A is correct because it predicts the soccer ball will slow or bounce back, and the basketball will start moving forward, which matches energy transfer principles. When the moving soccer ball hits the stationary basketball, energy must transfer, so the basketball will start moving and the soccer ball may rebound. This prediction accounts for the gentle kick and sizes and follows the rule that energy transfers from moving to stationary objects during collisions. Choice B is incorrect because it predicts the soccer ball will stop and the basketball will stay still, which ignores energy transfer. This error occurs when students ignore relative sizes. In reality, energy must transfer to the stationary object, causing motion in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 18

Chen uses a Newton's cradle and lifts one ball, then releases it; after the collision, what will happen?

  1. The lifted ball will stop, and one ball on the far end will swing out. (correct answer)
  2. All the balls will swing out together the same distance on both ends.
  3. The lifted ball will bounce back higher, and the other balls will stay still.
  4. The lifted ball will pass through the middle, and two end balls will swing out.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, one ball in Newton's cradle is lifted and released to hit the others. Before collision: the lifted ball has energy from its swing. After collision: energy will transfer through the line to the far end. We predict: the lifted will stop and one far end will swing out. The moving object transfers energy to the line. Choice A is correct because it predicts the lifted ball will stop and one ball on the far end will swing out, which matches energy transfer principles. When the moving ball hits the stationary line, energy must transfer, so the far ball will start moving and the lifted ball will stop. This prediction accounts for the setup given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice B is incorrect because it predicts all the balls will swing out together the same distance on both ends, which ignores energy transfer through the line. This error occurs when students don't understand transfer or ignore the setup. In reality, energy must be conserved and cause motion in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 19

A pool ball rolls toward two touching balls on a smooth table; after the collision, what will happen?

  1. The rolling ball will stop, and both touching balls will roll away in different directions. (correct answer)
  2. The rolling ball will pass through them, and the two touching balls will stay still.
  3. All three balls will stop instantly and stay in one pile.
  4. Only the rolling ball will bounce back, and the two touching balls will not move.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a pool ball rolls toward two touching stationary balls. Before collision: the rolling ball has energy because it's moving. After collision: energy will transfer from the rolling to the touching balls. We predict: the rolling will stop and the touching will roll away in different directions. The moving object transfers energy to the others. Choice A is correct because it predicts the rolling ball will stop and both touching balls will roll away in different directions, which matches energy transfer principles. When the moving ball hits the stationary touching balls, energy must transfer, so the touching balls will start moving and the rolling ball will stop. This prediction accounts for the setup given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice D is incorrect because it predicts only the rolling ball will bounce back and the two touching balls will not move, which ignores energy transfer. This error occurs when students think energy disappears or don't understand transfer. In reality, energy must transfer to the stationary objects, causing them to move in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.

Question 20

A moving hockey puck slides fast right and hits a stationary puck; after the collision, what will happen?

  1. The moving puck will slow down, and the still puck will move right. (correct answer)
  2. The moving puck will speed up, and the still puck will move left.
  3. The moving puck will keep its speed, and the still puck will stay still.
  4. Both pucks will stop at the same time and never move again.
Explanation: This question tests 4th grade ability to predict collision outcomes based on energy transfer principles (NGSS 4-PS3-3). Students must understand how energy transfers between objects during collisions affect their motion. In collisions, energy transfers from one object to another. A moving object has kinetic energy; when it hits a stationary object, some energy transfers to the stationary object, causing it to move. The moving object usually slows down (loses some energy). Heavier or faster objects have more energy to transfer. Direction of motion after collision depends on direction before collision and how objects hit each other. In this collision, a moving hockey puck slides fast right and hits a stationary puck. Before collision: the moving puck has more energy because it's moving fast. After collision: energy will transfer from the moving to the still. We predict: the moving will slow down and the still will start moving right. The faster object transfers energy to the other object. Choice A is correct because it predicts the moving puck will slow down and the still puck will move right, which matches energy transfer principles. When the moving puck hits the stationary puck, energy must transfer, so the still puck will start moving and the moving puck will slow down. This prediction accounts for the speeds given and follows the rule that energy transfers from moving to stationary objects during collisions. Choice C is incorrect because it predicts the moving puck will keep its speed and the still puck will stay still, which violates energy conservation by ignoring energy transfer. This error occurs when students don't understand transfer or ignore relative speeds. In reality, energy must transfer to the stationary object, causing it to move in the direction of impact. To help students predict: Use hands-on demonstrations with toy cars, marbles, or balls at different speeds and sizes. Observe and record: What happens? Notice patterns: moving object slows down, stationary object starts moving. Create prediction rules together: 'Energy transfers from moving to still objects.' 'Heavier/faster = more energy to transfer.' 'After collision: moving object has less speed, still object has gained speed.' Practice with: draw before and after pictures showing speeds (arrows), predict then test. Key principle: Energy doesn't disappear in collisions - it transfers from one object to another, changing their motion.