Waves | Middle school physics | Science | Khan Academy
Discover what waves are and the properties we use to describe them. Explore sound waves and electromagnetic waves across the electromagnetic spectrum. Learn how these waves are useful in many applications.
Overview
Added
March 18, 2026
Subject & domain
physics · waves-sound
Grade range
Grade 6–Grade 9 (Freshman)
Page kind
Course
Introduction
Waves Unit Overview
- Subject: Middle school physics.
- Core Topics:
- Definition and properties of waves.
- Sound waves.
- Electromagnetic waves and the electromagnetic spectrum.
- Learning Objectives: Understanding wave characteristics and their practical, real-world applications.
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