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Electricity, Magnetism, Light & Sound

Grade 5 · On-level practice · 8 questions · Version PG-1BI0G3J-PK8Q

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1.Why does a shadow form?
2.What happens to pitch as frequency rises?
3.What can happen when light enters water?
4.What energy change occurs in a speaker?
5.What is the electromagnetic spectrum?
6.What does a switch control?
7.Why does sound travel faster in solids?
8.What affects electromagnet strength?

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 14
  1. Why does a shadow form?An object blocks light
  2. What happens to pitch as frequency rises?Pitch becomes higher
  3. What can happen when light enters water?It refracts, or bends
  4. What energy change occurs in a speaker?Electrical energy becomes sound
  5. What is the electromagnetic spectrum?The full range of electromagnetic waves
  6. What does a switch control?Whether a circuit is open or closed
  7. Why does sound travel faster in solids?Close particles transfer vibrations quickly
  8. What affects electromagnet strength?Current, coil turns, and core material

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.