PencilGo

Electricity, Magnetism, Light & Sound

Grade 2 · On-level practice · 8 questions · Version PG-PFZUCC-KW5O

Free printable
1.What does a switch control?
2.What energy change occurs in a speaker?
3.Why can you hear an echo?
4.What can happen when light enters water?
5.What do opposite magnetic poles do?
6.Why does a shadow form?
7.What happens to pitch as frequency rises?
8.Name a good electrical conductor.

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 16
  1. What does a switch control?Whether a circuit is open or closed
  2. What energy change occurs in a speaker?Electrical energy becomes sound
  3. Why can you hear an echo?Sound reflects from a surface
  4. What can happen when light enters water?It refracts, or bends
  5. What do opposite magnetic poles do?Attract
  6. Why does a shadow form?An object blocks light
  7. What happens to pitch as frequency rises?Pitch becomes higher
  8. Name a good electrical conductor.Copper

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.