Grade 3 · Science · Challenge
Free Science Review worksheet - version 3
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-1VOANZN-1LFG
1.What is the role of chlorophyll?
2.Why do seasons occur?
3.Why are food webs more realistic than single food chains?
4.What type of boundary forms when plates move apart?
5.Why does salt lower water's freezing point?
6.What transfers traits from parents to offspring?
7.What is the pH of a neutral solution?
8.Which layer of Earth is liquid iron and nickel?
9.What is the difference between weather and climate?
10.What cell structure contains genetic material?
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 3
- What is the role of chlorophyll?Absorb light for photosynthesis
- Why do seasons occur?Earth's tilt as it orbits the Sun
- Why are food webs more realistic than single food chains?Organisms have multiple food sources and predators
- 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 transfers traits from parents to offspring?Genes
- What is the pH of a neutral solution?7
- Which layer of Earth is liquid iron and nickel?Outer core
- What is the difference between weather and climate?Weather is short-term; climate is long-term patterns
- What cell structure contains genetic material?The nucleus
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.