Sound is a part of everyday life. Your footsteps on a carpet make a quiet sound.
Slamming a door shut as you leave your home makes a loud sound.
You communicate using sound as you talk to your friends.
Sound travels as waves. You hear sound when waves travel through the air to your
ears. The closer you are to a sound, the more clearly you hear it. A firework display
up close can be extremely loud, but from a distance, fireworks sound much quieter.