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Electricity, Magnetism, Light & Sound

Grade 5 · Building confidence · 8 questions · Version PG-16SMBTH-P1OG

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1.What affects electromagnet strength?
2.What is the electromagnetic spectrum?
3.Why does sound travel faster in solids?
4.What happens to pitch as frequency rises?
5.Why can you hear an echo?
6.What does a switch control?
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 16
  1. What affects electromagnet strength?Current, coil turns, and core material
  2. What is the electromagnetic spectrum?The full range of electromagnetic waves
  3. Why does sound travel faster in solids?Close particles transfer vibrations quickly
  4. What happens to pitch as frequency rises?Pitch becomes higher
  5. Why can you hear an echo?Sound reflects from a surface
  6. What does a switch control?Whether a circuit is open or closed
  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.