SOUND ENERGY

By: EVAN BARNETT AND ANDREW GRIER

VIBRATION ABOMONATION

Sound comes from vibrations. These vibrations create sound waves which move through mediums such as air & water before reaching our ears. Our ears vibrate in a similar way to the original source of the vibration, allowing us to hear many different sounds.

ANIMALS vs. HUMANS

Humans can't hear all sounds?

Dogs can hear a higher frequency than humans, allowing them to hear noises we can't. Sound is used by many animals to detect danger, warning them of possible attacks before they happen!? I wander what cases they use the loudest sounds.

Links

Speed Boat pic: www.fastcodesign.com

Purple small sound pic: www.hdwallpapersos.com

Very colorful sound wave pic: www.bewail.net

Notes: www.sciencekids.co.nz Little Boy Image: www.virusresearch.org

SPEED IS KEY

The speed of sound is about 767 miles per hour (1230 kilometers per hour) Sound can`t travel through a vacuum (an area empty of matter)