Science of Sound

October 25, 2019
PAKORN KUMRUEN—EYEEM/GETTY IMAGES

What is sound? Sound is created when an object vibrates. The vibrations travel in waves. Sound waves reach our ears. The ears send a message to the brain. That’s how we hear different sounds! A sound can be loud or quiet. It can have a high pitch or a low pitch. Here are a few different sounds.

PRINCESSDLAF/GETTY IMAGES

A drum can make a low-pitched rumbling sound. Thump thump!

JOHANN SCHUMACHER—GETTY IMAGES

Some birds make a high-pitched chirping sound. Tweet tweet!

SCHNUDDEL

A bee makes a quiet buzzing sound. Bzzzzz!

PETER DAZELEY

This alarm clock makes a loud ringing sound. Brrring!