Elementary School Science Quiz: Improving Based On Tests

20 questions · exam conditions

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Improving Based On TestsQuestion 1 of 20

Look at the test results. Keisha tested a parachute made from a plastic bag. It fell from 8 feet in 3 seconds and landed 6 feet away from the target. The class saw one string was shorter than the others, and it drifted sideways. Which improvement would solve the problem found in the test?

Aim the drop better with your hand, because strings do not affect drifting.

Make the plastic bag smaller, so it drops faster and lands closer every time.

Add stickers to the bag, because stickers help it hit the target.

Make all the strings the same length, so the parachute does not drift sideways.

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Elementary School Science Quiz

Elementary School Science Quiz: Improving Based On Tests

Practice Improving Based On Tests 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 Improving Based On Tests, 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

Aim the drop better with your hand, because strings do not affect drifting.
Make the plastic bag smaller, so it drops faster and lands closer every time.
Add stickers to the bag, because stickers help it hit the target.
Make all the strings the same length, so the parachute does not drift sideways. (correct answer)

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed the parachute fell in 3 seconds but drifted sideways 6 feet away due to one shorter string. Specifically, the uneven strings caused the drift. Choice B is correct because it suggests making all strings the same length which directly addresses the problem found in testing: equal lengths prevent sideways drifting. This improvement is based on test evidence showing the shorter string caused drift, making it a targeted, evidence-based fix rather than a random change. Choice A represents suggesting an unrelated or counterproductive change like size for speed. Students who choose this may think any change is an improvement without checking test data on drift. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 2

Read about what happened during the test. The parachute took 3 seconds to fall 8 feet, but it drifted 6 feet sideways. The strings were uneven. Based on the test results, how could students improve the parachute?

Make the plastic canopy smaller so it drops faster and lands sooner.
Tie a knot in the shorter string to make all strings match in length. (correct answer)
Aim the parachute better by standing closer to the target.
Add stickers to the canopy so it is easier to see in the air.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed the parachute drifted 6 feet sideways during its fall. Specifically, the strings were uneven, causing the parachute to tilt and drift off target. Choice B is correct because it suggests tying a knot in the shorter string to make all strings match in length, which directly addresses the problem found in testing: uneven strings causing sideways drift. This improvement is based on test evidence showing uneven strings caused the drift, making it a targeted, evidence-based fix rather than a random change. Choice C represents not a design improvement. Students who choose this may confuse changing how they use the parachute with actually improving the parachute's design based on test results. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask "What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?" Emphasize connecting improvements to test evidence using "because": "We should even out the strings BECAUSE the test showed uneven strings caused drift." Practice distinguishing major failures (fix first) from minor issues.

Question 3

Read about what happened during the test. Chen made a water filter with a cup, cloth, and gravel. Dirty water flowed through in 20 seconds, but the water still looked brown. He also saw some dirt go around the sides instead of through the filter. What change would make the filter work better?

Pour the water faster, so the filter has less time to get dirty. (correct answer)
Use a bigger cup, because cup size caused the brown color in the water.
Make the gravel layer thicker and seal the sides, so water must go through the filter.
Use less gravel, so the water can flow through in 10 seconds.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed water flowed through in 20 seconds but remained brown, with some dirt bypassing around the sides. Specifically, the main problems were insufficient filtering and leaks around the sides. Choice A is correct because it suggests making the gravel layer thicker and sealing the sides which directly addresses the problem found in testing: thicker gravel improves filtering, and sealing prevents bypassing. This improvement is based on test evidence showing brown water and side leaks, making it a targeted, evidence-based fix rather than a random change. Choice C represents the opposite of what's needed by reducing gravel. Students who choose this may think speed is more important than cleanliness without connecting to test data on brown water. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 4

Read about what happened during the test. Amir made a water filter and poured in dirty water. The water came out in 20 seconds, but it still looked brown. He also saw water slip around the sides of the filter. According to the test results, which part needs to be improved?

Use a brighter cup, because the cup color made the water look brown.
Seal the sides and add more gravel, so water must pass through thicker layers. (correct answer)
Make the filter hole bigger, so water flows through even faster.
Make the water pour from higher up, so it splashes less while filtering.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed water exited quickly but remained brown, with slipping around the sides. Specifically, the main problems were poor sealing and insufficient gravel for filtering. Choice A is correct because it suggests sealing the sides and adding more gravel which directly addresses the problem found in testing: sealing prevents bypassing, and more gravel thickens the filter for cleaner water. This improvement is based on test evidence showing side leaks and brown water, making it a targeted, evidence-based fix rather than a random change. Choice D represents focusing on speed over quality, ignoring cleanliness. Students who choose this may not connect test results to the brown water issue and prioritize flow without evidence. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 5

Look at the test results. Jamal built a paper bridge to hold pennies. Bridge A held 15 pennies before it collapsed. The middle sagged first, then the paper tore where it was folded. The test showed the middle needs more support and folds are weak spots. Which improvement would solve the problem found in the test?

Add a support strip under the middle and tape the folded parts, because those spots sagged and tore. (correct answer)
Make the bridge longer, because the test showed it was too short to hold pennies.
Use fewer pennies next time, because the bridge should not be tested with many pennies.
Fold the paper more times in the same spot, because more folds stop tearing.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed the bridge held 15 pennies but the middle sagged first and tore at folds. Specifically, the main failure points were the weak middle and folded areas. Choice A is correct because it suggests adding a support strip under the middle and taping the folded parts which directly addresses the problem found in testing: this strengthens the sagging middle and weak folds. This improvement is based on test evidence showing sagging and tearing at those spots, making it a targeted, evidence-based fix rather than a random change. Choice B represents suggesting an improvement for a non-problem like length instead of strength. Students who choose this may try to fix something that worked fine and not connect test results to needed improvements. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 6

Look at the test results. Yuki tested 3 cups of ice water for 30 minutes. Cup A went from 32°F to 55°F and the ice melted all the way. Cup B with newspaper went to 40°F and kept half the ice. Cup C with bubble wrap went to 34°F and kept almost all the ice. The test showed a problem. How could students fix it for Cup A?

Put Cup A in the sun, because sunlight will keep ice from melting.
Use a smaller cup, because smaller cups always stay colder than wrapped cups.
Wrap Cup A with bubble wrap, because it kept the coldest temperature in the test. (correct answer)
Stir the water more, because stirring stops the temperature from rising.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed Cup A warmed rapidly and lost all ice, while Cup C with bubble wrap stayed coldest. Specifically, the main problem was inadequate insulation in Cup A. Choice A is correct because it suggests wrapping Cup A with bubble wrap which directly addresses the problem found in testing: bubble wrap insulates better to maintain cold temperatures. This improvement is based on test evidence showing bubble wrap performed best, making it a targeted, evidence-based fix rather than a random change. Choice B represents suggesting an unrelated or harmful change like sun exposure. Students who choose this may ignore test data and think external factors unrelated to insulation help without evidence. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 7

Read about what happened during the test. Marcus made a paper bridge from one sheet of paper. It held 15 pennies, then collapsed. The middle sagged first, and the tear started at a folded line. Based on the test results, how could students improve the paper bridge?

Remove the middle part, because the ends were the strongest in the test.
Make the bridge wider only at the ends, because the ends sagged first.
Reinforce the middle with another paper strip, and tape the fold lines where it tore. (correct answer)
Use fewer folds, because more folds always make paper stronger.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed the bridge held 15 pennies but sagged in the middle first and tore at a fold line. Specifically, the main failure points were the weak middle and fold lines. Choice A is correct because it suggests reinforcing the middle with another paper strip and taping the fold lines which directly addresses the problem found in testing: this adds strength to the sagging area and weak folds. This improvement is based on test evidence showing sagging and tearing there, making it a targeted, evidence-based fix rather than a random change. Choice C represents a misconception about folds, suggesting fewer when more targeted reinforcement is needed. Students who choose this may not connect test results to specific weaknesses and assume general rules without evidence. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 8

Look at the test results. In a plant watering test, System A drained in 2 hours and made mud, System B gave no water in 4 hours, and System C dripped for 2 days. Which improvement would solve the problem found in the test?

Make the hole even bigger than System A so water drains faster.
Change the hole size to drip slowly like System C, not too fast or clogged. (correct answer)
Fill the bottle with juice instead of water to help plants grow.
Stop testing and build a brand-new watering system with metal parts.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed System A drained too fast in 2 hours making mud, System B was clogged giving no water, and System C dripped slowly for 2 days. Specifically, the hole size determined water flow rate, with System C's slow drip being ideal for plant watering. Choice B is correct because it suggests changing the hole size to drip slowly like System C, which directly addresses the problems found in testing: too fast drainage causing mud or no drainage from clogging. This improvement is based on test evidence showing System C's slow drip worked best, making it a targeted, evidence-based fix rather than a random change. Choice A represents opposite of what's needed. Students who choose this may not understand that System A already drained too fast, and making the hole bigger would worsen the mud problem. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask "What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?" Emphasize connecting improvements to test evidence using "because": "We should make holes like System C BECAUSE the test showed slow dripping worked best." Practice distinguishing major failures (fix first) from minor issues.

Question 9

Read about what happened during the test. Ramp A rolled 18 inches but fell off, Ramp B stayed on but rolled 10 inches, and Ramp C rolled 25 inches and stayed on. Based on the test results, how can students use the results to make the design better?

Make the ramp flatter like Ramp B so the marble rolls farther than 25 inches.
Remove the sides so the marble can jump off and go farther.
Add sides like Ramp C and make it a bit steeper, so it stays on and rolls far. (correct answer)
Paint the ramp to help the marble roll straight every time.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed Ramp A rolled 18 inches but marble fell off, Ramp B stayed on but only rolled 10 inches, and Ramp C rolled 25 inches and stayed on. Specifically, Ramp C combined the best features: sides to keep the marble on track and good steepness for distance. Choice C is correct because it suggests adding sides like Ramp C and making it a bit steeper, which directly addresses both problems found in testing: falling off (solved by sides) and short distance (solved by steepness). This improvement is based on test evidence showing Ramp C's combination worked best, making it a targeted, evidence-based fix rather than a random change. Choice A represents fixing non-problem while creating new problem. Students who choose this may focus only on distance without considering that Ramp A's marble falling off was a major failure that needs fixing first. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask "What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?" Emphasize connecting improvements to test evidence using "because": "We should add sides and adjust steepness BECAUSE the test showed this combination worked best." Practice distinguishing major failures (fix first) from minor issues.

Question 10

Read about what happened during the test. Bubble wrap kept ice almost frozen at 34°F after 30 minutes, better than newspaper at 40°F. Based on the test results, how could students improve their insulated cup?

Use newspaper because it warmed the water more, which means it worked best.
Use bubble wrap and cover the whole cup, since it kept the coldest temperature. (correct answer)
Put the cup in the sun so the ice melts evenly.
Poke holes in the wrapping so air can get in faster.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed bubble wrap kept ice almost frozen at 34°F after 30 minutes, better than newspaper at 40°F. Specifically, bubble wrap was the most effective insulator for keeping ice cold. Choice B is correct because it suggests using bubble wrap and covering the whole cup, which directly addresses the goal based on testing: maximizing insulation to keep ice cold. This improvement is based on test evidence showing bubble wrap performed best, and suggests complete coverage for even better results, making it a targeted, evidence-based fix rather than a random change. Choice A represents misunderstanding test results. Students who choose this may confuse warmer temperature with better performance, not understanding that for keeping ice cold, lower temperature means better insulation. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask "What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?" Emphasize connecting improvements to test evidence using "because": "We should use bubble wrap and cover completely BECAUSE the test showed it kept ice coldest." Practice distinguishing major failures (fix first) from minor issues.

Question 11

Look at the test results. The class tested 3 cups to keep ice water cold for 30 minutes. Cup A had no wrap and warmed from 32°F to 55°F, and the ice melted all the way. Cup B had newspaper and warmed to 40°F, with half the ice left. Cup C had bubble wrap and warmed to 34°F, with almost all the ice left. What should students change based on what the test showed?

Use bubble wrap on the cup, because it stayed closest to 32°F and kept the most ice. (correct answer)
Use no wrapping, because Cup A warmed the fastest and needs more practice.
Paint the cups different colors, because colors will stop the ice from melting.
Make the cup taller, because height was the biggest problem in the test.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed that Cup A with no wrap warmed the most and lost all ice, while Cup C with bubble wrap stayed coldest and kept most ice. Specifically, the main problem was poor insulation leading to rapid warming and melting. Choice A is correct because it suggests using bubble wrap on the cup which directly addresses the problem found in testing: bubble wrap provides better insulation to keep the temperature low and prevent melting. This improvement is based on test evidence showing Cup C performed best, making it a targeted, evidence-based fix rather than a random change. Choice B represents suggesting an improvement for a non-problem or worsening the issue. Students who choose this may not connect test results to needed improvements and think repeating the worst performer helps 'practice' without evidence. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 12

Read about what happened during the test. Carlos tested 3 marble ramps. Ramp A rolled 18 inches but the marble fell off the side halfway down. Ramp B stayed on the ramp but only rolled 10 inches because it was too flat. Ramp C rolled 25 inches and stayed on track. What should students change based on what the test showed for Ramp A?

Add side walls or rails, because the marble fell off the side during the test. (correct answer)
Make the ramp flatter, because a flatter ramp makes marbles stay on better.
Use a lighter marble, because weight caused the marble to fall off the side.
Paint the ramp, because paint helps marbles roll farther and stay on track.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed Ramp A rolled far but the marble fell off the side halfway. Specifically, the main problem was lack of containment on the sides. Choice A is correct because it suggests adding side walls or rails which directly addresses the problem found in testing: this keeps the marble on track during rolling. This improvement is based on test evidence showing the marble fell off the side, making it a targeted, evidence-based fix rather than a random change. Choice B represents suggesting an improvement that could worsen distance without fixing the fall-off. Students who choose this may focus on one aspect like flatness but ignore the test data on side falls. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 13

Look at the test results. Maya built a self-watering plant system with a bottle. System A drained all the water in 2 hours and made the soil muddy. System B had no water after 4 hours because the hole was clogged. System C dripped slowly for 2 days and kept soil moist. Based on the test results, how could students improve System A?

Make the hole smaller or add a tiny drip hole, so water does not drain in 2 hours. (correct answer)
Make the hole bigger, so the water drains even faster into the soil.
Do not use any hole, because plants should be watered only by pouring.
Change the bottle color, because clear bottles make soil muddy.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed System A drained too quickly in 2 hours, making soil muddy, while System C dripped slowly and worked well. Specifically, the main problem was the hole allowing water to drain too fast. Choice A is correct because it suggests making the hole smaller or adding a tiny drip hole which directly addresses the problem found in testing: this slows drainage to prevent muddiness and overwatering. This improvement is based on test evidence showing rapid drainage caused issues, making it a targeted, evidence-based fix rather than a random change. Choice B represents the opposite of what's needed by speeding up drainage. Students who choose this may not connect test results to the muddiness problem and think faster is always better. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 14

Look at the test results. A water filter cleaned some dirt, but the water stayed brown. Water flowed through in 20 seconds, and dirt went around the sides. The test showed a problem. How could students fix it?

Make the water pour faster so it finishes in 10 seconds.
Seal the sides and add more gravel, so water goes through the filter more slowly. (correct answer)
Use a wider cup so the dirty water looks less brown.
Shake the filter while pouring so the dirt falls to the bottom.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed the water stayed brown and flowed through in 20 seconds. Specifically, water flowed too fast and dirt went around the sides, bypassing the filter materials. Choice B is correct because it suggests sealing the sides and adding more gravel so water goes through more slowly, which directly addresses the problems found in testing: water flowing too fast and going around the sides. This improvement is based on test evidence showing fast flow and side leakage prevented proper filtering, making it a targeted, evidence-based fix rather than a random change. Choice A represents opposite of what's needed. Students who choose this may not understand that making water flow faster would reduce filtering effectiveness, not improve it. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask "What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?" Emphasize connecting improvements to test evidence using "because": "We should seal sides and slow flow BECAUSE the test showed water went around and through too fast." Practice distinguishing major failures (fix first) from minor issues.

Question 15

Read about what happened during the test. Sofia tested a parachute made from a plastic bag. It dropped from 8 feet in 3 seconds, but it drifted sideways and landed 6 feet from the target. She noticed one string was shorter than the others. Based on the test results, how could students improve the parachute?

Cut one string even shorter, so the parachute turns faster and lands sooner.
Color the parachute with markers, so it will drop slower.
Make all the strings the same length, so it falls straight to the target. (correct answer)
Tie the strings in a big knot at the top, so it lands farther away.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed the parachute drifted sideways and landed far from the target due to one shorter string. Specifically, the uneven strings caused the sideways drift. Choice B is correct because it suggests making all strings the same length which directly addresses the problem found in testing: equal strings prevent drifting and help it fall straight. This improvement is based on test evidence showing the shorter string caused the issue, making it a targeted, evidence-based fix rather than a random change. Choice A represents the opposite of what's needed by making the problem worse. Students who choose this may think any change to speed is an improvement without checking test data on the drift cause. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 16

Look at the test results. Bridge A held 15 pennies, but the middle sagged and tore at a fold. Based on the test, how could students improve the paper bridge?

Make the bridge longer so it can hold more pennies.
Add a support under the middle and tape the folded spot, since it sagged and tore there. (correct answer)
Use a different color paper so it looks stronger.
Fold the paper more times in the same place to make it stronger.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. Good improvements are based on evidence from tests, not random changes or complete redesigns. In this scenario, the test showed that Bridge A held 15 pennies before failing. Specifically, the middle sagged and tore at a fold, indicating the middle section was the weakest point. Choice B is correct because it suggests adding a support under the middle and taping the folded spot, which directly addresses the problem found in testing: the middle sagging and tearing. This improvement is based on test evidence showing the middle was the failure point, making it a targeted, evidence-based fix rather than a random change. Choice A represents suggests improvement for non-problem. Students who choose this may think longer bridges are always stronger without considering that the test showed the middle, not the length, was the problem. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask "What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?" Emphasize connecting improvements to test evidence using "because": "We should add middle support BECAUSE the test showed the middle sagged and tore." Practice distinguishing major failures (fix first) from minor issues.

Question 17

Look at the test results. Which part of the paper bridge needs to be improved most?

The bridge needs fewer folds because folds always make paper stronger.
The color needs changing because the bridge looked plain on the table.
The ends need to be shorter because they did not touch the pennies.
The middle needs support because it sagged before the bridge collapsed. (correct answer)

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. In this scenario, the test showed the middle of the bridge sagging before collapsing under load. Choice A is correct because it suggests the middle needs support which directly addresses the problem found in testing: this fix targets the specific failure point of sagging. Choice B represents suggesting improvement for non-problem like appearance. Students who choose this may try to fix something that worked fine. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 18

Read about what happened during the test. What change would slow the parachute's fall from 8 feet?

Use a bigger plastic bag canopy so it catches more air and falls slower. (correct answer)
Make one string shorter so it spins and lands farther away.
Cut holes in the bag so more air escapes and it drops faster.
Drop it from 2 feet instead of 8 feet to fix the parachute design.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. In this scenario, the test showed the parachute falling too quickly from 8 feet, not slowing enough. Choice A is correct because it suggests using a bigger plastic bag canopy which directly addresses the problem found in testing: this fix targets the specific failure point of fast descent. Choice B represents suggesting the opposite of what's needed. Students who choose this may think faster fall is better without checking test data. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 19

Look at the test results. What should students change to keep the ice water cold longer?

Use no wrapping so the cup can cool off faster in the air.
Shake the cup so the ice melts evenly and looks nicer.
Use bubble wrap because it kept the water closest to 32°F. (correct answer)
Use Cup A again because its ice melted completely after 30 minutes.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. In this scenario, the test showed ice water warming up too quickly in some wrappings, with bubble wrap maintaining the lowest temperature. Choice B is correct because it suggests using bubble wrap which directly addresses the problem found in testing: this fix targets the specific failure point of heat loss. Choice A represents suggesting the opposite of what's needed. Students who choose this may think cooling faster is the goal without checking test data. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.

Question 20

Look at the test results. Which wrapping should students choose to improve Cup A?

Use newspaper because it melted all the ice and reached 55°F. (correct answer)
Use bubble wrap because it kept the temperature at 34°F after 30 minutes.
Use a thinner wrap so more heat can get in and melt ice quicker.
Use no wrapping because Cup A warmed up to 55°F the fastest.

Explanation: This question tests using test results to suggest improvements (NGSS 3-5-ETS1-3: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved). Testing reveals what works and what doesn't work in a design. When tests show problems or failures, engineers use that information to make specific improvements. The key is matching the improvement to the problem found in the test - if the middle sagged, strengthen the middle; if strings were uneven causing drift, make strings equal. In this scenario, the test showed Cup A warming up to 55°F, while bubble wrap maintained 34°F after 30 minutes. Choice A is correct because it suggests using bubble wrap which directly addresses the problem found in testing: this fix targets the specific failure point of rapid warming. Choice B represents suggesting the opposite of what's needed. Students who choose this may think faster warming is the goal without checking test data. To help students: Create two-column chart: What the test showed (problems) | How to fix it (improvements). Ask 'What went wrong in the test? Where did it break/fail/not work? How could we fix that specific problem?' Emphasize connecting improvements to test evidence using 'because': 'We should [improvement] BECAUSE the test showed [problem].' Practice distinguishing major failures (fix first) from minor issues.