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Science Review

Grade 3 · On-level practice · 10 questions · Version PG-3SSOFI-1OA7

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1.Why do shadows change during the day?
2.Name the three main rock types.
3.Which simple machine is a ramp?
4.What is the freezing point of water in Celsius?
5.What causes day and night?
6.What structure protects a plant cell but not an animal cell?
7.Which gas do humans breathe in for respiration?
8.What role does a mushroom often have in an ecosystem?
9.What type of energy is stored in food?
10.What is an animal that eats plants called?

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 2
  1. Why do shadows change during the day?The Sun's apparent position changes
  2. Name the three main rock types.Igneous, sedimentary, and metamorphic
  3. Which simple machine is a ramp?Inclined plane
  4. What is the freezing point of water in Celsius?0°C
  5. What causes day and night?Earth's rotation
  6. What structure protects a plant cell but not an animal cell?Cell wall
  7. Which gas do humans breathe in for respiration?Oxygen
  8. What role does a mushroom often have in an ecosystem?Decomposer
  9. What type of energy is stored in food?Chemical energy
  10. What is an animal that eats plants called?Herbivore

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.