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Science Review

Grade 4 · Building confidence · 10 questions · Version PG-5KB7VI-1RT1

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1.Which gas do humans breathe in for respiration?
2.Which organ pumps blood?
3.What causes sound?
4.What is water vapor changing to liquid called?
5.What structure protects a plant cell but not an animal cell?
6.What is the freezing point of water in Celsius?
7.Name the three main rock types.
8.What is a food chain's first energy source?
9.What causes day and night?
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 18
  1. Which gas do humans breathe in for respiration?Oxygen
  2. Which organ pumps blood?The heart
  3. What causes sound?Vibrations
  4. What is water vapor changing to liquid called?Condensation
  5. What structure protects a plant cell but not an animal cell?Cell wall
  6. What is the freezing point of water in Celsius?0°C
  7. Name the three main rock types.Igneous, sedimentary, and metamorphic
  8. What is a food chain's first energy source?The Sun
  9. What causes day and night?Earth's rotation
  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.