Grade 4 · Science · Challenge
Free Science Review worksheet - version 9
Grade 4 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 4 · Stretch challenge · 10 questions · Version PG-XYC51S-DBMY
1.Which layer of Earth is liquid iron and nickel?
2.State Newton's third-law force pair when swimming.
3.Which blood cells fight infection?
4.What evidence shows a chemical reaction occurred?
5.What type of boundary forms when plates move apart?
6.Why do seasons occur?
7.What does conservation of energy mean?
8.How do greenhouse gases warm Earth?
9.What is density?
10.What is the role of chlorophyll?
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 9
- Which layer of Earth is liquid iron and nickel?Outer core
- State Newton's third-law force pair when swimming.Push water back; water pushes swimmer forward
- Which blood cells fight infection?White blood cells
- What evidence shows a chemical reaction occurred?New substances form
- What type of boundary forms when plates move apart?Divergent boundary
- Why do seasons occur?Earth's tilt as it orbits the Sun
- What does conservation of energy mean?Energy changes form but is not created or destroyed
- How do greenhouse gases warm Earth?They absorb and re-emit infrared energy
- What is density?Mass per unit volume
- What is the role of chlorophyll?Absorb light for photosynthesis
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.