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Electricity, Magnetism, Light & Sound

Grade 1 · Stretch challenge · 8 questions · Version PG-18OH9FA-1TU2

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1.What do like magnetic poles do?
2.What energy change occurs in a speaker?
3.What does a switch control?
4.Name a good electrical conductor.
5.What do opposite magnetic poles do?
6.How do you see an object?
7.What happens to pitch as frequency rises?
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 15
  1. What do like magnetic poles do?Repel
  2. What energy change occurs in a speaker?Electrical energy becomes sound
  3. What does a switch control?Whether a circuit is open or closed
  4. Name a good electrical conductor.Copper
  5. What do opposite magnetic poles do?Attract
  6. How do you see an object?Reflected light enters your eyes
  7. What happens to pitch as frequency rises?Pitch becomes higher
  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.