Electricity and Magnetism · Weeks 19-27

Electromagnetic Waves

Introduction to the nature of electromagnetic waves and their properties.

Key Questions

  1. Explain how electromagnetic waves can travel through a vacuum.
  2. Differentiate between mechanical waves and electromagnetic waves.
  3. Analyze the relationship between the electric and magnetic fields in an EM wave.

Common Core State Standards

HS-PS4-3HS-PS4-4
Grade: 9th Grade
Subject: Physics
Unit: Electricity and Magnetism
Period: Weeks 19-27

Suggested Methodologies

Concept Mapping

Build visual maps of concept relationships

20–40 min

Learn more about Concept Mapping

Chalk Talk

Written-only discussion, no speaking allowed

15–30 min

Learn more about Chalk Talk

Think-Pair-Share

Individual reflection, then partner discussion, then class share-out

10–20 min

Learn more about Think-Pair-Share

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