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How Your Ear hears Sound center doc

hearing, sound, ear

How does the ear actually hear

Telecommunication. Sound Waves. Sound energy travels in the form of waves. Sound can travel through solids , liquids and gases by vibrating the particles in the three types of materials. Telecommunication. Sound Waves. The particles in the three materials vibrate in the same direction as the wave motion. This wave is called a Longitudinal Wave Telecommunications. Sound Waves. These waves then vibrate our ear drums which then activate small bones in our inner ear. A diagram of the ear is shown. Telecommunication. The Ear. Telecommunication. The difference between sound and light waves. Sound waves travel very much slower than light waves. This can be seen by observing a thunder and lightning storm. The light reaches us quickly but the sound from the thunder comes later. Telecommunication The speed of sound. The speed of sound can be measured by by using two microphones and an electronic timer. When the sound reaches the first mic, the timer starts.When the sound reaches the second mic, the timer stops. If we know the distance between the two mics (say one metre) and the time , we can work out the speed.This is shown on the next slide. Telecommunication. Calculation of The Speed of Sound The Speed of Sound can be calculated as shown below. Speed = distance time = 1/0.003 = 330 m / s Telecommunication. The difference between sound and light waves. Light is a transverse wave.The particles move at right angles to the wave as shown. * Sound waves cannot travel in a vacuum. bones Ear drum Outer ear TELECOMMUNICATION. THE SPEED OF SOUND. Time = 0.003s Mic 1 Mic 2 Distance = 1 metre Sound here * * * Show demo with slinky. Copy and let them stick into notebook. Discuss this idea with other examples e.g. the one o clock gun. give diagram from int 1 disc to paste into notebooks. Do the speed of sound experiment and get them to copy results into note book.Discuss the idea of doing experiment a number of times and taking an average result.
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3/8/2008
English
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how the ear hears13
how the ear hears sound12
how does sound travel to our ears?12
how sound reaches the ear12
ear in terms of sound waves12
diagram to show how sound travel to the ear22
how the sound of a drum reaches your ear12
sound reaches ear11
how sound can travel to your ear11
how our ear hears11
how does sound travel to your ear11
ear diagram sound waves21
how sound travels into ear31
ppt telecommunication-sound11
how the ear hears number in order11
how your ear hears11
sound travelling in ear11
the speed of sound in the ear11
how sound travels through your ear21
what are the three types of materials of the ear11
 
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