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Science Review

Grade 2 · Stretch challenge · 10 questions · Version PG-N1N223-KTCW

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1.What is an animal that eats plants called?
2.What type of energy is stored in food?
3.What is a food chain's first energy source?
4.Which planet is known for its rings?
5.What process lets plants make food using light?
6.What is the freezing point of water in Celsius?
7.Which gas do humans breathe in for respiration?
8.What is water vapor changing to liquid called?
9.What causes sound?
10.What role does a mushroom often have in an ecosystem?

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 13
  1. What is an animal that eats plants called?Herbivore
  2. What type of energy is stored in food?Chemical energy
  3. What is a food chain's first energy source?The Sun
  4. Which planet is known for its rings?Saturn
  5. What process lets plants make food using light?Photosynthesis
  6. What is the freezing point of water in Celsius?0°C
  7. Which gas do humans breathe in for respiration?Oxygen
  8. What is water vapor changing to liquid called?Condensation
  9. What causes sound?Vibrations
  10. What role does a mushroom often have in an ecosystem?Decomposer

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.