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Science Review

Grade 5 · Building confidence · 10 questions · Version PG-C4HLQ7-1K6R

Children investigate a leaf and a frog with a caregiver beside a pond.
1.

What is the difference between weather and climate?

2.

How do greenhouse gases warm Earth?

3.

Why does salt lower water's freezing point?

4.

What cell structure contains genetic material?

5.

What does conservation of energy mean?

6.

What evidence shows a chemical reaction occurred?

7.

What transfers traits from parents to offspring?

8.

Which layer of Earth is liquid iron and nickel?

9.

Which blood cells fight infection?

10.

Why are food webs more realistic than single food chains?

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 3
  1. What is the difference between weather and climate?Weather is short-term; climate is long-term patterns
  2. How do greenhouse gases warm Earth?They absorb and re-emit infrared energy
  3. Why does salt lower water's freezing point?It disrupts ice crystal formation
  4. What cell structure contains genetic material?The nucleus
  5. What does conservation of energy mean?Energy changes form but is not created or destroyed
  6. What evidence shows a chemical reaction occurred?New substances form
  7. What transfers traits from parents to offspring?Genes
  8. Which layer of Earth is liquid iron and nickel?Outer core
  9. Which blood cells fight infection?White blood cells
  10. Why are food webs more realistic than single food chains?Organisms have multiple food sources and predators

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.