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Science Review

Grade 1 · Stretch challenge · 10 questions · Version PG-11W772L-FSI3

1.

What causes sound?

2.

What is a food chain's first energy source?

3.

Which planet is known for its rings?

4.

Why do shadows change during the day?

5.

Which simple machine is a ramp?

6.

What is water vapor changing to liquid called?

7.

What role does a mushroom often have in an ecosystem?

8.

What process lets plants make food using light?

9.

Which gas do humans breathe in for respiration?

10.

What is the freezing point of water in Celsius?

Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 7
  1. What causes sound?Vibrations
  2. What is a food chain's first energy source?The Sun
  3. Which planet is known for its rings?Saturn
  4. Why do shadows change during the day?The Sun's apparent position changes
  5. Which simple machine is a ramp?Inclined plane
  6. What is water vapor changing to liquid called?Condensation
  7. What role does a mushroom often have in an ecosystem?Decomposer
  8. What process lets plants make food using light?Photosynthesis
  9. Which gas do humans breathe in for respiration?Oxygen
  10. What is the freezing point of water in Celsius?0°C

Worked example

Connect the question to an observable process or scientific model.

Common mistake

Selecting a familiar term without checking its meaning.

Helpful hint

Explain why your answer makes sense.