Grade 4 · Science · Challenge
Free Science Review worksheet - version 11
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-NJXS9N-DBMY
1.Why does salt lower water's freezing point?
2.What is the difference between weather and climate?
3.What transfers traits from parents to offspring?
4.Which blood cells fight infection?
5.Which layer of Earth is liquid iron and nickel?
6.What is the pH of a neutral solution?
7.How do greenhouse gases warm Earth?
8.What is the role of chlorophyll?
9.What evidence shows a chemical reaction occurred?
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 11
- 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
- What transfers traits from parents to offspring?Genes
- Which blood cells fight infection?White blood cells
- Which layer of Earth is liquid iron and nickel?Outer core
- What is the pH of a neutral solution?7
- How do greenhouse gases warm Earth?They absorb and re-emit infrared energy
- What is the role of chlorophyll?Absorb light for photosynthesis
- What evidence shows a chemical reaction occurred?New substances form
- 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.