Grade 3 · Science · Challenge
Free Science Review worksheet - version 17
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-KFEIQY-1LFG
1.What type of boundary forms when plates move apart?
2.Why does salt lower water's freezing point?
3.What is the pH of a neutral solution?
4.What transfers traits from parents to offspring?
5.How do greenhouse gases warm Earth?
6.Which blood cells fight infection?
7.Which layer of Earth is liquid iron and nickel?
8.What is the role of chlorophyll?
9.What is the difference between weather and climate?
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 17
- 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 pH of a neutral solution?7
- What transfers traits from parents to offspring?Genes
- How do greenhouse gases warm Earth?They absorb and re-emit infrared energy
- Which blood cells fight infection?White blood cells
- Which layer of Earth is liquid iron and nickel?Outer core
- What is the role of chlorophyll?Absorb light for photosynthesis
- What is the difference between weather and climate?Weather is short-term; climate is long-term patterns
- 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.