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Science Review

Grade 4 · Building confidence · 10 questions · Version PG-P7EYAY-1RT1

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1.What structure protects a plant cell but not an animal cell?
2.Which organ pumps blood?
3.Which gas do humans breathe in for respiration?
4.What role does a mushroom often have in an ecosystem?
5.Which planet is known for its rings?
6.Why do shadows change during the day?
7.What causes day and night?
8.Which simple machine is a ramp?
9.What is the freezing point of water in Celsius?
10.What is a food chain's first energy source?

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 9
  1. What structure protects a plant cell but not an animal cell?Cell wall
  2. Which organ pumps blood?The heart
  3. Which gas do humans breathe in for respiration?Oxygen
  4. What role does a mushroom often have in an ecosystem?Decomposer
  5. Which planet is known for its rings?Saturn
  6. Why do shadows change during the day?The Sun's apparent position changes
  7. What causes day and night?Earth's rotation
  8. Which simple machine is a ramp?Inclined plane
  9. What is the freezing point of water in Celsius?0°C
  10. What is a food chain's first energy source?The Sun

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.