Grade 3 · Science · On Level
Free Science Review worksheet - version 5
Grade 3 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 3 · On-level practice · 10 questions · Version PG-4MRHIF-1OA7
1.Which gas do humans breathe in for respiration?
2.What causes day and night?
3.Which planet is known for its rings?
4.What causes sound?
5.What role does a mushroom often have in an ecosystem?
6.Why do shadows change during the day?
7.Name the three main rock types.
8.What structure protects a plant cell but not an animal cell?
9.What is a food chain's first energy source?
10.What is water vapor changing to liquid 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 5
- Which gas do humans breathe in for respiration?Oxygen
- What causes day and night?Earth's rotation
- Which planet is known for its rings?Saturn
- What causes sound?Vibrations
- What role does a mushroom often have in an ecosystem?Decomposer
- Why do shadows change during the day?The Sun's apparent position changes
- Name the three main rock types.Igneous, sedimentary, and metamorphic
- What structure protects a plant cell but not an animal cell?Cell wall
- What is a food chain's first energy source?The Sun
- What is water vapor changing to liquid called?Condensation
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.