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Electricity, Magnetism, Light & Sound

Grade 4 · Building confidence · 8 questions · Version PG-IDXENH-O9KU

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1.What does a switch control?
2.What happens to pitch as frequency rises?
3.Name a good electrical conductor.
4.What do like magnetic poles do?
5.How do you see an object?
6.What do opposite magnetic poles do?
7.What energy change occurs in a speaker?
8.Why does a shadow form?

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 11
  1. What does a switch control?Whether a circuit is open or closed
  2. What happens to pitch as frequency rises?Pitch becomes higher
  3. Name a good electrical conductor.Copper
  4. What do like magnetic poles do?Repel
  5. How do you see an object?Reflected light enters your eyes
  6. What do opposite magnetic poles do?Attract
  7. What energy change occurs in a speaker?Electrical energy becomes sound
  8. Why does a shadow form?An object blocks light

Worked example

Use a model to track energy, forces, and waves through a system.

Common mistake

Assuming energy travels without a path or medium.

Helpful hint

Draw the source, path, interaction, and result.