Grade 4 · Science · Challenge
Free Science Review worksheet - version 1
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-1068YLK-DBMY
1.State Newton's third-law force pair when swimming.
2.Why are food webs more realistic than single food chains?
3.What does conservation of energy mean?
4.What is the difference between weather and climate?
5.How do greenhouse gases warm Earth?
6.Which layer of Earth is liquid iron and nickel?
7.Which blood cells fight infection?
8.What evidence shows a chemical reaction occurred?
9.Why does salt lower water's freezing point?
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 1
- State Newton's third-law force pair when swimming.Push water back; water pushes swimmer forward
- Why are food webs more realistic than single food chains?Organisms have multiple food sources and predators
- What does conservation of energy mean?Energy changes form but is not created or destroyed
- What is the difference between weather and climate?Weather is short-term; climate is long-term patterns
- How do greenhouse gases warm Earth?They absorb and re-emit infrared energy
- Which layer of Earth is liquid iron and nickel?Outer core
- Which blood cells fight infection?White blood cells
- What evidence shows a chemical reaction occurred?New substances form
- Why does salt lower water's freezing point?It disrupts ice crystal formation
- 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.