How Sound Waves Travel
Science · Waves, Light & Sound · conceptual
Explain that sound is produced by vibrating objects and travels as a longitudinal pressure wave through solids, liquids, and gases; describe reflection of sound (echoes) and absorption; explain why sound cannot travel through a vacuum
What mastery looks like
- Explains how a vibrating object creates regions of compression and rarefaction in air
- Explains why sound travels fastest in solids and cannot travel in a vacuum
- Describes how an echo is produced and gives a practical application (sonar, ultrasound)
- Explains what sound absorption means and why soft furnishings reduce echoes
Check your understanding
If How Sound Waves Travel heard an echo in a large empty hall, could they explain what causes the echo, why the same sound in a carpeted living room doesn’t echo, and what would happen to sound in outer space?
Prerequisites
Required first
Unlocks (0 directly)
None.