Grade 3 · Science · Challenge
Free Science Review worksheet - version 19
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-GJK31C-1LFG
1.Why does salt lower water's freezing point?
2.State Newton's third-law force pair when swimming.
3.What type of boundary forms when plates move apart?
4.What cell structure contains genetic material?
5.What transfers traits from parents to offspring?
6.Why do seasons occur?
7.What is the difference between weather and climate?
8.Which layer of Earth is liquid iron and nickel?
9.What is the role of chlorophyll?
10.What is density?
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 19
- Why does salt lower water's freezing point?It disrupts ice crystal formation
- State Newton's third-law force pair when swimming.Push water back; water pushes swimmer forward
- What type of boundary forms when plates move apart?Divergent boundary
- What cell structure contains genetic material?The nucleus
- What transfers traits from parents to offspring?Genes
- Why do seasons occur?Earth's tilt as it orbits the Sun
- What is the difference between weather and climate?Weather is short-term; climate is long-term patterns
- Which layer of Earth is liquid iron and nickel?Outer core
- What is the role of chlorophyll?Absorb light for photosynthesis
- What is density?Mass per unit volume
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.