PencilGo

Electricity, Magnetism, Light & Sound

Grade 3 · Building confidence · 8 questions · Version PG-HQUXXS-127M

Free printable
1.What can happen when light enters water?
2.What happens to pitch as frequency rises?
3.What energy change occurs in a speaker?
4.Why does a shadow form?
5.What do opposite magnetic poles do?
6.What does a switch control?
7.Name a good electrical conductor.
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 4
  1. What can happen when light enters water?It refracts, or bends
  2. What happens to pitch as frequency rises?Pitch becomes higher
  3. What energy change occurs in a speaker?Electrical energy becomes sound
  4. Why does a shadow form?An object blocks light
  5. What do opposite magnetic poles do?Attract
  6. What does a switch control?Whether a circuit is open or closed
  7. Name a good electrical conductor.Copper
  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.