Question: Describe, with the aid of diagrams, observations which lead us to believe that the wavelength of light is much smaller than the wavelength of sound.

Hello dboy16,
I would like to help,but sorry,(forum policy)can't help unless the OP shows some attempt at solving the problem so...



EDIT : I don't know where your problem lies but if you're really really stuck I suggest you read up on the following
How it works - Diffraction

Diffraction of Sound

I personally find these links very useful when solving problems like this.

Hope this helps

oh....sorry. my attempt was saying that light waves have frequencies and short wavelengths whereas sound waves are low frequency waves but have longer wavelengths.wavelength is the converse of frequency so the shorter the wavelength the higher the frequency. The larger the wavelength, the lower the freq.
sorry about that earlier......

The relation governing the speed, wavelength and frequency for a wave is speed = frequency x wavelength or,

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Since the speed of sound and light are greatly different, the comparison could give unexpected results.
Since the speed of sound ~ 340 met/sec a 10 Hz wave would have a wavelength of 34 metres.
A 10 Hz "light" or electromagnetic wave would have a wavelength of the order of 3000,000,0 metres!
(since the speed of light ~300000000 m/sec.)

I think it’s a vibration and if a sound was louder the sound wave would be thinner and travel faster. The Law of Conservation of Energy states that energy cannot be created or damaged.



Thanks.

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The loudness of the sound does not affect its speed or wavelength thru the medium.