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Practice Test 7 - 1st Grade Science

20 questions. Answer them in any order, then submit to see your score and every explanation.

  1. Read about Chen's design. His toy parachutes fell too fast. He copied dandelion seeds and made a parachute using tissue paper, string, tape, scissors, and a small toy. What problem does the design solve?​
  2. During makerspace, Amir and Maya had a problem: crayons got mixed with markers. They made two container designs. Design A was one big box with no dividers. Design B was a box with dividers. When they tested the designs, they put the same crayons and markers in each box and shook gently 5 times. They collected data by observing if items mixed or stayed separated. Results: A mixed (yes), B stayed separated (yes). They wrote yes/no in a chart. What do the test results show?
  3. Keisha wrote 4 times: daytime no stars, nighttime stars. Based on the pattern, what will happen tomorrow night?
  4. Amir compared months: September had about 12 hours of daylight; December had about 9. Using the evidence, why is there less daylight in December?
  5. Look at what Keisha found out. She plucked a guitar string and saw it move back and forth fast. She heard a musical sound. When she touched the string, it stopped moving and the sound stopped too. What did Keisha's observations show?
  6. Look at what Emma observed. She hit a triangle and it shook and rang. When she grabbed the triangle, it stopped shaking and the ringing stopped too. How does Emma know vibration causes sound?
  7. Read Jamal's plan: hold clear plastic, wax paper, then cardboard in a flashlight beam. What should Jamal observe on the wall?
  8. Keisha is tired of her markers rolling to the floor. She sketches a stopper wall: a long, low rectangle that sits at the table edge. She draws it like a straight barrier and labels it "stop wall." The wall is taller than the marker in her drawing. The sketch shows the marker bumping the wall and stopping. What does the drawing show about how the object will work?
  9. Read about Chen. He tapped a drum; rice bounced. Why?
  10. In the makerspace, Amir and Maya had a problem: a supply holder tipped over. Design A had a narrow base, and Design B had a wide base. To test both designs the same way, they pushed each holder gently one time from the side. They observed if it tipped over. Results: A tipped over (yes), B tipped over (no). What information does the data give about each design?
  11. Keisha saw: In April it stayed light until 7pm, in June until 8pm, in October until 6pm. Based on the observations, what does the time of year affect?
  12. Read Sofia's window test: glass→see outside; tissue→blurry shapes; poster board→dark; mirror→light bounced back. What did Sofia learn about materials and light?
  13. Marcus keeps losing small counters because they slide in his backpack. He sketches a box shaped like a rectangle with a lid and 2 divider lines inside. He draws the lid as a flat top that closes. He labels the inside spaces "counters" and "dice." The sketch shows the dividers clearly. Why did Marcus draw the dividers?
  14. Read about Sofia and her drum. She touches it. What happened when she touched it?
  15. Carlos sees a bright blue sky in the day with no stars. At night, the sky is dark with many stars. When are stars not visible?
  16. Read about Chen's design. How does the design help Chen solve the problem? Chen's action figure crashes because the parachute falls fast. He copies dandelion seeds that catch air with fluffy tops. He used tissue paper, string, tape, scissors, and a toy. He made a wide tissue parachute and drew it floating down slowly.
  17. Read Emma's test: clear plastic stayed bright; red plastic made red light. What evidence shows red plastic changes light?
  18. Read the plan: QUESTION: Do vibrating things make sound? MATERIALS: triangle, stick. STEPS: 1) Hold triangle by string. 2) Tap it. 3) Grab it to stop. OBSERVE: shaking and sound. RESULT: ringing stops when grabbed. What should you observe?
  19. Carlos slipped on the climbing wall before. He added bumpy paint to gloves like gecko feet and tested them; he climbed higher and did not slip. How does it solve his problem?
  20. Look at Emma's flashlight code tests: Plan—see signal, understand message, and work at distance. Test 1: 1 flash—SUCCESS. Test 2: 2 flashes—SUCCESS. Test 3: 3 flashes—SUCCESS. Test 4: bright daytime by window—FAILED. When should Emma use this device?

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