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Electricity, Magnetism, Light & Sound

Grade 5 · On-level practice · 8 questions · Version PG-1OVAVZ8-PK8Q

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1.What does a switch control?
2.What happens to pitch as frequency rises?
3.What affects electromagnet strength?
4.Why are parallel circuit branches useful?
5.Why does sound travel faster in solids?
6.Why can you hear an echo?
7.What can happen when light enters water?
8.What is the electromagnetic spectrum?

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 6
  1. What does a switch control?Whether a circuit is open or closed
  2. What happens to pitch as frequency rises?Pitch becomes higher
  3. What affects electromagnet strength?Current, coil turns, and core material
  4. Why are parallel circuit branches useful?Each branch can operate independently
  5. Why does sound travel faster in solids?Close particles transfer vibrations quickly
  6. Why can you hear an echo?Sound reflects from a surface
  7. What can happen when light enters water?It refracts, or bends
  8. What is the electromagnetic spectrum?The full range of electromagnetic waves

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.