Grade 4 · Science · Challenge
Free Science Review worksheet - version 18
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-L21D0W-DBMY
What is the role of chlorophyll?
Why do seasons occur?
How do greenhouse gases warm Earth?
What evidence shows a chemical reaction occurred?
What does conservation of energy mean?
What type of boundary forms when plates move apart?
Which blood cells fight infection?
What is density?
What is the pH of a neutral solution?
Which layer of Earth is liquid iron and nickel?
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 18
- What is the role of chlorophyll?Absorb light for photosynthesis
- Why do seasons occur?Earth's tilt as it orbits the Sun
- How do greenhouse gases warm Earth?They absorb and re-emit infrared energy
- 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
- What type of boundary forms when plates move apart?Divergent boundary
- Which blood cells fight infection?White blood cells
- What is density?Mass per unit volume
- What is the pH of a neutral solution?7
- Which layer of Earth is liquid iron and nickel?Outer core
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.