Grade 4 · Science · On Level
Free Science Review worksheet - version 20
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-P2BWBB-102C
Why do seasons occur?
Why does salt lower water's freezing point?
What is the pH of a neutral solution?
What type of boundary forms when plates move apart?
Why are food webs more realistic than single food chains?
What is density?
What evidence shows a chemical reaction occurred?
What does conservation of energy mean?
How do greenhouse gases warm Earth?
Which blood cells fight infection?
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 20
- Why do seasons occur?Earth's tilt as it orbits the Sun
- Why does salt lower water's freezing point?It disrupts ice crystal formation
- What is the pH of a neutral solution?7
- What type of boundary forms when plates move apart?Divergent boundary
- Why are food webs more realistic than single food chains?Organisms have multiple food sources and predators
- What is density?Mass per unit volume
- What evidence shows a chemical reaction occurred?New substances form
- What does conservation of energy mean?Energy changes form but is not created or destroyed
- How do greenhouse gases warm Earth?They absorb and re-emit infrared energy
- Which blood cells fight infection?White blood cells
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.