Grade 3 · Science · Challenge
Free Science Review worksheet - version 7
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-1WS92RJ-1LFG
1.What is density?
2.What evidence shows a chemical reaction occurred?
3.Which blood cells fight infection?
4.Why are food webs more realistic than single food chains?
5.What transfers traits from parents to offspring?
6.What is the pH of a neutral solution?
7.What does conservation of energy mean?
8.Why do seasons occur?
9.What type of boundary forms when plates move apart?
10.Which layer of Earth is liquid iron and nickel?
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 7
- What is density?Mass per unit volume
- What evidence shows a chemical reaction occurred?New substances form
- Which blood cells fight infection?White blood cells
- Why are food webs more realistic than single food chains?Organisms have multiple food sources and predators
- What transfers traits from parents to offspring?Genes
- What is the pH of a neutral solution?7
- What does conservation of energy mean?Energy changes form but is not created or destroyed
- Why do seasons occur?Earth's tilt as it orbits the Sun
- What type of boundary forms when plates move apart?Divergent boundary
- Which layer of Earth is liquid iron and nickel?Outer core
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.