Grade 4 · Science · Challenge
Free Science Review worksheet - version 15
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-ONW71J-DBMY
1.What evidence shows a chemical reaction occurred?
2.Why do seasons occur?
3.Which layer of Earth is liquid iron and nickel?
4.State Newton's third-law force pair when swimming.
5.What is the role of chlorophyll?
6.Why does salt lower water's freezing point?
7.What transfers traits from parents to offspring?
8.What is the pH of a neutral solution?
9.What cell structure contains genetic material?
10.Why are food webs more realistic than single food chains?
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 15
- What evidence shows a chemical reaction occurred?New substances form
- Why do seasons occur?Earth's tilt as it orbits the Sun
- 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
- What is the role of chlorophyll?Absorb light for photosynthesis
- Why does salt lower water's freezing point?It disrupts ice crystal formation
- What transfers traits from parents to offspring?Genes
- What is the pH of a neutral solution?7
- What cell structure contains genetic material?The nucleus
- Why are food webs more realistic than single food chains?Organisms have multiple food sources and predators
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.