Grade 4 · Science · Challenge
Free Science Review worksheet - version 19
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-LC0YPV-DBMY
What evidence shows a chemical reaction occurred?
Why does salt lower water's freezing point?
What cell structure contains genetic material?
What is density?
Why do seasons occur?
What type of boundary forms when plates move apart?
How do greenhouse gases warm Earth?
What is the role of chlorophyll?
What is the difference between weather and climate?
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 19
- What evidence shows a chemical reaction occurred?New substances form
- Why does salt lower water's freezing point?It disrupts ice crystal formation
- What cell structure contains genetic material?The nucleus
- What is density?Mass per unit volume
- Why do seasons occur?Earth's tilt as it orbits the Sun
- What type of boundary forms when plates move apart?Divergent boundary
- How do greenhouse gases warm Earth?They absorb and re-emit infrared energy
- 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
- 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.