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Science Review

Grade 5 · Stretch challenge · 10 questions · Version PG-Y8WMLY-178N

1.

What cell structure contains genetic material?

2.

State Newton's third-law force pair when swimming.

3.

What transfers traits from parents to offspring?

4.

What does conservation of energy mean?

5.

Which blood cells fight infection?

6.

Why are food webs more realistic than single food chains?

7.

What is density?

8.

Why does salt lower water's freezing point?

9.

How do greenhouse gases warm Earth?

10.

What is the difference between weather and climate?

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 15
  1. What cell structure contains genetic material?The nucleus
  2. State Newton's third-law force pair when swimming.Push water back; water pushes swimmer forward
  3. What transfers traits from parents to offspring?Genes
  4. What does conservation of energy mean?Energy changes form but is not created or destroyed
  5. Which blood cells fight infection?White blood cells
  6. Why are food webs more realistic than single food chains?Organisms have multiple food sources and predators
  7. What is density?Mass per unit volume
  8. Why does salt lower water's freezing point?It disrupts ice crystal formation
  9. How do greenhouse gases warm Earth?They absorb and re-emit infrared energy
  10. What is the difference between weather and climate?Weather is short-term; climate is long-term patterns

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.