PencilGo

Science Review

Grade 2 · Stretch challenge · 10 questions · Version PG-WH846T-KTCW

Free printable
1.What is water vapor changing to liquid called?
2.What is a food chain's first energy source?
3.What is the freezing point of water in Celsius?
4.Which simple machine is a ramp?
5.What structure protects a plant cell but not an animal cell?
6.What type of energy is stored in food?
7.Which gas do humans breathe in for respiration?
8.Why do shadows change during the day?
9.What causes day and night?
10.Which planet is known for its rings?

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 8
  1. What is water vapor changing to liquid called?Condensation
  2. What is a food chain's first energy source?The Sun
  3. What is the freezing point of water in Celsius?0°C
  4. Which simple machine is a ramp?Inclined plane
  5. What structure protects a plant cell but not an animal cell?Cell wall
  6. What type of energy is stored in food?Chemical energy
  7. Which gas do humans breathe in for respiration?Oxygen
  8. Why do shadows change during the day?The Sun's apparent position changes
  9. What causes day and night?Earth's rotation
  10. Which planet is known for its rings?Saturn

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.