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Science Review

Grade 2 · On-level practice · 10 questions · Version PG-1JA8CVQ-L6W9

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1.What is a food chain's first energy source?
2.What process lets plants make food using light?
3.Name the three main rock types.
4.What structure protects a plant cell but not an animal cell?
5.Which simple machine is a ramp?
6.What type of energy is stored in food?
7.What role does a mushroom often have in an ecosystem?
8.Why do shadows change during the day?
9.Which gas do humans breathe in for respiration?
10.Which organ pumps blood?

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 5
  1. What is a food chain's first energy source?The Sun
  2. What process lets plants make food using light?Photosynthesis
  3. Name the three main rock types.Igneous, sedimentary, and metamorphic
  4. What structure protects a plant cell but not an animal cell?Cell wall
  5. Which simple machine is a ramp?Inclined plane
  6. What type of energy is stored in food?Chemical energy
  7. What role does a mushroom often have in an ecosystem?Decomposer
  8. Why do shadows change during the day?The Sun's apparent position changes
  9. Which gas do humans breathe in for respiration?Oxygen
  10. Which organ pumps blood?The heart

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.