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Electricity, Magnetism, Light & Sound

Grade 2 · On-level practice · 8 questions · Version PG-6L1L4M-KW5O

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