Grade 3 · Science · Challenge
Free Science Review worksheet - version 16
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 · Stretch challenge · 10 questions · Version PG-KPE4FX-1LFG
1.What does conservation of energy mean?
2.Why are food webs more realistic than single food chains?
3.What evidence shows a chemical reaction occurred?
4.What is the role of chlorophyll?
5.State Newton's third-law force pair when swimming.
6.What is the difference between weather and climate?
7.Why do seasons occur?
8.What cell structure contains genetic material?
9.Which layer of Earth is liquid iron and nickel?
10.What transfers traits from parents to offspring?
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 16
- What does conservation of energy mean?Energy changes form but is not created or destroyed
- Why are food webs more realistic than single food chains?Organisms have multiple food sources and predators
- What evidence shows a chemical reaction occurred?New substances form
- What is the role of chlorophyll?Absorb light for photosynthesis
- State Newton's third-law force pair when swimming.Push water back; water pushes swimmer forward
- What is the difference between weather and climate?Weather is short-term; climate is long-term patterns
- Why do seasons occur?Earth's tilt as it orbits the Sun
- What cell structure contains genetic material?The nucleus
- Which layer of Earth is liquid iron and nickel?Outer core
- What transfers traits from parents to offspring?Genes
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.