Grade 2 · Science · Challenge
Free Science Review worksheet - version 14
Grade 2 science review matched to the learner's current level. This printable version includes 10 grade-appropriate questions and a separate answer sheet.
Science Review
Grade 2 · Stretch challenge · 10 questions · Version PG-OFL2IY-KTCW
1.Which gas do humans breathe in for respiration?
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 type of energy is stored in food?
5.What causes day and night?
6.Name the three main rock types.
7.Which organ pumps blood?
8.Which simple machine is a ramp?
9.Why do shadows change during the day?
10.What causes sound?
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 14
- Which gas do humans breathe in for respiration?Oxygen
- What structure protects a plant cell but not an animal cell?Cell wall
- What role does a mushroom often have in an ecosystem?Decomposer
- What type of energy is stored in food?Chemical energy
- What causes day and night?Earth's rotation
- Name the three main rock types.Igneous, sedimentary, and metamorphic
- Which organ pumps blood?The heart
- Which simple machine is a ramp?Inclined plane
- Why do shadows change during the day?The Sun's apparent position changes
- What causes sound?Vibrations
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.