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Electricity, Magnetism, Light & Sound

Grade 1 · Stretch challenge · 8 questions · Version PG-P1L3QN-1TU2

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1.What do like magnetic poles do?
2.What can happen when light enters water?
3.How do you see an object?
4.What does a switch control?
5.Why can you hear an echo?
6.What happens to pitch as frequency rises?
7.What energy change occurs in a speaker?
8.Name a good electrical conductor.

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 9
  1. What do like magnetic poles do?Repel
  2. What can happen when light enters water?It refracts, or bends
  3. How do you see an object?Reflected light enters your eyes
  4. What does a switch control?Whether a circuit is open or closed
  5. Why can you hear an echo?Sound reflects from a surface
  6. What happens to pitch as frequency rises?Pitch becomes higher
  7. What energy change occurs in a speaker?Electrical energy becomes sound
  8. Name a good electrical conductor.Copper

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.