Grade 3 · Science · Challenge
Free Science Review worksheet - version 12
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-JLFPO1-1LFG
1.What is the role of chlorophyll?
2.What type of boundary forms when plates move apart?
3.Why does salt lower water's freezing point?
4.What is the difference between weather and climate?
5.Why are food webs more realistic than single food chains?
6.State Newton's third-law force pair when swimming.
7.Why do seasons occur?
8.What does conservation of energy mean?
9.What cell structure contains genetic material?
10.What evidence shows a chemical reaction occurred?
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 12
- What is the role of chlorophyll?Absorb light for photosynthesis
- What type of boundary forms when plates move apart?Divergent boundary
- Why does salt lower water's freezing point?It disrupts ice crystal formation
- What is the difference between weather and climate?Weather is short-term; climate is long-term patterns
- Why are food webs more realistic than single food chains?Organisms have multiple food sources and predators
- State Newton's third-law force pair when swimming.Push water back; water pushes swimmer forward
- 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
- What cell structure contains genetic material?The nucleus
- What evidence shows a chemical reaction occurred?New substances form
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.