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Electricity, Magnetism, Light & Sound

Grade 4 · Stretch challenge · 8 questions · Version PG-1NSCAN0-T6HC

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

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 18
  1. Why does a shadow form?An object blocks light
  2. What can happen when light enters water?It refracts, or bends
  3. What does a switch control?Whether a circuit is open or closed
  4. What affects electromagnet strength?Current, coil turns, and core material
  5. What is the electromagnetic spectrum?The full range of electromagnetic waves
  6. Why are parallel circuit branches useful?Each branch can operate independently
  7. Why does sound travel faster in solids?Close particles transfer vibrations quickly
  8. Why can you hear an echo?Sound reflects from a surface

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.