🔬 Science · Waves, Light & Sound
How Sound Waves Travel
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
Typical age: 11–12 years
“If your child 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?”
0 / 4 mastered
Explore graph
Needs first
Unlocks next
This doesn't unlock anything else yet.