Sound Amy Ard Hammond Eastside Upper Unit Two

Sound Anything that can be heard. Anything that can be heard. Sound is created by vibrations. Sound is created by vibrations. Move back and forth. Move back and forth.

Noise Unpleasant sounds Unpleasant sounds Burp Burp Airplanes Airplanes Screaming Screaming Crying Crying

Outer Ear The part of the ear you can see. The part of the ear you can see.

Inner Ear The part of the ear you cannot see. The part of the ear you cannot see.

Brain The part of the body that hears the sound.

Echo A sound that bounces off another objects. A sound that bounces off another objects.

Volume The loudness or softness of a sound. The loudness or softness of a sound.

Pitch The highness or lowness of sound. The highness or lowness of sound. Fast vibrations create a sound with a high pitch. Slow vibrations create a sound with a low pitch.

Bullhorn An instrument with a built-in microphone that makes sound louder.

Stethoscope An instrument used to hear the sounds of body organs.

Hearing Aid An instrument used to help people with a hearing problem hear.

Sound Travel The sound vibrations travel through the air in all directions. Sounds can move through solids, liquids, and gas.

Location of Sound Sounds are louder close up Sounds are softer far away

Speed of Sound Sounds travel faster through solid Sound travel slowest through gas

A sound can be heard through the ground before it could be heard in the air. Sound cannot travel in outer space because there is no air.

How can you make a drum sound louder? Use more energy and force to beat on the drum. Use more energy and force to beat on the drum. To make a drum sound louder, you need to hit the drum harder.