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Science Review

Grade 5 · Stretch challenge · 10 questions · Version PG-1IGWC3R-178N

1.

Why does salt lower water's freezing point?

2.

What type of boundary forms when plates move apart?

3.

What is density?

4.

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

5.

What transfers traits from parents to offspring?

6.

What cell structure contains genetic material?

7.

What is the difference between weather and climate?

8.

What is the pH of a neutral solution?

9.

Why are food webs more realistic than single food chains?

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 1
  1. Why does salt lower water's freezing point?It disrupts ice crystal formation
  2. What type of boundary forms when plates move apart?Divergent boundary
  3. What is density?Mass per unit volume
  4. State Newton's third-law force pair when swimming.Push water back; water pushes swimmer forward
  5. What transfers traits from parents to offspring?Genes
  6. What cell structure contains genetic material?The nucleus
  7. What is the difference between weather and climate?Weather is short-term; climate is long-term patterns
  8. What is the pH of a neutral solution?7
  9. Why are food webs more realistic than single food chains?Organisms have multiple food sources and predators
  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.