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Science Review

Grade 2 · On-level practice · 10 questions · Version PG-19RQYVK-L6W9

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1.What causes sound?
2.What structure protects a plant cell but not an animal cell?
3.What role does a mushroom often have in an ecosystem?
4.What is the freezing point of water in Celsius?
5.Why do shadows change during the day?
6.Which simple machine is a ramp?
7.What is an animal that eats plants called?
8.Name the three main rock types.
9.Which planet is known for its rings?
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 12
  1. What causes sound?Vibrations
  2. What structure protects a plant cell but not an animal cell?Cell wall
  3. What role does a mushroom often have in an ecosystem?Decomposer
  4. What is the freezing point of water in Celsius?0°C
  5. Why do shadows change during the day?The Sun's apparent position changes
  6. Which simple machine is a ramp?Inclined plane
  7. What is an animal that eats plants called?Herbivore
  8. Name the three main rock types.Igneous, sedimentary, and metamorphic
  9. Which planet is known for its rings?Saturn
  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.