The Science of Sound pt. 1 by Aaron Hammond

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Slide Notes

The Science of Sound pt. 1

Published on Mar 08, 2016

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PRESENTATION OUTLINE

The Science of Sound

Waves, drums and ear hair

Photo by tjmwatson

Sound is something that the human brain creates based on something happening in the air around you.

Photo by justine warrington

There are tiny hairs in your ear that turn pressure waves into electrical signals.

Photo by jaci XIII

Pressure waves in the air look just like pressure waves in a pool: a surge of air that is squished together.

Photo by @Doug88888

Sound waves work a lot like light does. They bounce around in a room, or get absorbed.

Photo by Thomas Hawk

But what creates those waves?

Photo by DCSL

Something vibrating.

Photo by lazymood

A drum head vibrates after you hit it.

Photo by garryknight

A kazoo has a little piece of paper that buzzes when you blow into it.

Photo by Beige Alert

Choose another instrument. Take 2 minutes with your shoulder partner and discuss how you think that instrument creates vibrations.

Photo by ores2k

But what about the voice? We don't rattle around when we sing...

Photo by gilmorec

What vibrates to create your voice?

Photo by jasohill

The pitch (how high or low a note is) is determined by how wide the soundwaves are.

Long waves
=
low notes

Photo by tjmwatson

Short waves
=
fast notes

Photo by j_baer

That's all the science I have for you today...

Photo by eriwst

Take a second with your shoulder partner and come up with a question. What do you want to know more about?

Photo by theqspeaks

Aaron Hammond

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