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Science Review

Grade 1 · Stretch challenge · 10 questions · Version PG-XQD5O0-FSI3

1.

Which organ pumps blood?

2.

Why do shadows change during the day?

3.

Which simple machine is a ramp?

4.

What is an animal that eats plants called?

5.

What causes day and night?

6.

What is a food chain's first energy source?

7.

Which gas do humans breathe in for respiration?

8.

What is the freezing point of water in Celsius?

9.

What causes sound?

10.

Name the three main rock types.

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 8
  1. Which organ pumps blood?The heart
  2. Why do shadows change during the day?The Sun's apparent position changes
  3. Which simple machine is a ramp?Inclined plane
  4. What is an animal that eats plants called?Herbivore
  5. What causes day and night?Earth's rotation
  6. What is a food chain's first energy source?The Sun
  7. Which gas do humans breathe in for respiration?Oxygen
  8. What is the freezing point of water in Celsius?0°C
  9. What causes sound?Vibrations
  10. Name the three main rock types.Igneous, sedimentary, and metamorphic

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.