🔁 ECHOES AND REFLECTION
PAGE 1 OF 5 · WHAT IS AN ECHO?
SOUND BOUNCES BACK
SOUND CAN BOUNCE!
An echo occurs when a sound wave hits a hard surface and bounces back to you. If the surface is far away, the sound takes time to return, creates a distinct delay. You shout "Hello!" and a moment later you hear "Hello!" again. That returning copy is an echo. It happens because sound waves do not always stop when they hit something. Sometimes they reflect, like a ball bouncing off a wall.
🔁 DID YOU KNOW?
Light bounces off mirrors the same way sound bounces off cliffs. Both are waves that can reflect when they hit a smooth, hard surface!
ECHO!
BOUNCING
🏀 Wave hits hard surface
↩️ Bounces back toward you
↩️ Bounces back toward you
SPACE
📏 Distance matters a lot
🏔️ Canyons make great echoes
🏔️ Canyons make great echoes