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Wednesday 21 May 2014

Sound Explanation

Introduction : Sound is everywhere around us. Even when you're in a silent room you can still hear yourself breathing or your heart pumping. Body : Sound is vibration. If an object is hit, it begins to vibrate. These vibrations travel through sound waves. The closer the sound waves the higher the pitch, further away sound waves gives you a lower pitch. Also sound can travel four times faster in water than air. Just think about ripples in a pond. When you throw a pebble into the pond, it creates ripples. Just like sound, It vibrates then fades and it shows you an example of what these vibrations may look like. Why we hear sound is because these sound waves travel through your ears then into your brain where your brain translates it into words/sound. Did you know? In space there is no sound. The reason behind this is that vibrations need something to travel through. In earth the vibrations can travel through air or water. In space though, There is no mediums so the vibrations cannot travel and make sound. So without water or air there is no sound. Conclusion : A world without sound would be so tough. Sound boosts our chance of survival and communication. Sound can help animals hunt their food and help detect danger. Animals would become extinct fast and humans wouldn’t have meat to eat.

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