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Science Review

Grade 1 · Stretch challenge · 10 questions · Version PG-1FONPHZ-FSI3

1.

What is the freezing point of water in Celsius?

2.

What is water vapor changing to liquid called?

3.

Why do shadows change during the day?

4.

Name the three main rock types.

5.

Which organ pumps blood?

6.

What causes day and night?

7.

Which gas do humans breathe in for respiration?

8.

What structure protects a plant cell but not an animal cell?

9.

What is a food chain's first energy source?

10.

Which planet is known for its rings?

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 16
  1. What is the freezing point of water in Celsius?0°C
  2. What is water vapor changing to liquid called?Condensation
  3. Why do shadows change during the day?The Sun's apparent position changes
  4. Name the three main rock types.Igneous, sedimentary, and metamorphic
  5. Which organ pumps blood?The heart
  6. What causes day and night?Earth's rotation
  7. Which gas do humans breathe in for respiration?Oxygen
  8. What structure protects a plant cell but not an animal cell?Cell wall
  9. What is a food chain's first energy source?The Sun
  10. Which planet is known for its rings?Saturn

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.