Grade 4 · Science · On Level
Free Science Review worksheet - version 2
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 · On-level practice · 10 questions · Version PG-XFJCT9-102C
1.Why are food webs more realistic than single food chains?
2.Which layer of Earth is liquid iron and nickel?
3.How do greenhouse gases warm Earth?
4.Which blood cells fight infection?
5.What is the difference between weather and climate?
6.What is the role of chlorophyll?
7.State Newton's third-law force pair when swimming.
8.What type of boundary forms when plates move apart?
9.Why does salt lower water's freezing point?
10.What is the pH of a neutral solution?
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 2
- Why are food webs more realistic than single food chains?Organisms have multiple food sources and predators
- Which layer of Earth is liquid iron and nickel?Outer core
- How do greenhouse gases warm Earth?They absorb and re-emit infrared energy
- Which blood cells fight infection?White blood cells
- What is the difference between weather and climate?Weather is short-term; climate is long-term patterns
- What is the role of chlorophyll?Absorb light for photosynthesis
- 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
- Why does salt lower water's freezing point?It disrupts ice crystal formation
- What is the pH of a neutral solution?7
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.