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Science Review

Grade 2 · On-level practice · 10 questions · Version PG-1MM3L7E-L6W9

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1.Which gas do humans breathe in for respiration?
2.What process lets plants make food using light?
3.Which planet is known for its rings?
4.What structure protects a plant cell but not an animal cell?
5.What causes day and night?
6.What causes sound?
7.Which simple machine is a ramp?
8.Name the three main rock types.
9.What is an animal that eats plants called?
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. Which gas do humans breathe in for respiration?Oxygen
  2. What process lets plants make food using light?Photosynthesis
  3. Which planet is known for its rings?Saturn
  4. What structure protects a plant cell but not an animal cell?Cell wall
  5. What causes day and night?Earth's rotation
  6. What causes sound?Vibrations
  7. Which simple machine is a ramp?Inclined plane
  8. Name the three main rock types.Igneous, sedimentary, and metamorphic
  9. What is an animal that eats plants called?Herbivore
  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.