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Electricity, Magnetism, Light & Sound

Grade 5 · On-level practice · 8 questions · Version PG-1OLBAA9-PK8Q

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

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

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.