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Science Review

Grade 5 · On-level practice · 10 questions · Version PG-1JJ82UE-1AF4

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1.Why are food webs more realistic than single food chains?
2.What transfers traits from parents to offspring?
3.What does conservation of energy mean?
4.What cell structure contains genetic material?
5.Which layer of Earth is liquid iron and nickel?
6.What is the pH of a neutral solution?
7.What type of boundary forms when plates move apart?
8.How do greenhouse gases warm Earth?
9.Why do seasons occur?
10.What evidence shows a chemical reaction occurred?

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 4
  1. Why are food webs more realistic than single food chains?Organisms have multiple food sources and predators
  2. What transfers traits from parents to offspring?Genes
  3. What does conservation of energy mean?Energy changes form but is not created or destroyed
  4. What cell structure contains genetic material?The nucleus
  5. Which layer of Earth is liquid iron and nickel?Outer core
  6. What is the pH of a neutral solution?7
  7. What type of boundary forms when plates move apart?Divergent boundary
  8. How do greenhouse gases warm Earth?They absorb and re-emit infrared energy
  9. Why do seasons occur?Earth's tilt as it orbits the Sun
  10. What evidence shows a chemical reaction occurred?New substances form

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.