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Sound Waves
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Sound Waves
Some whales produce songs that travel for about
1 kilometer
2 kilometers
50 kilometers
100 kilometers
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Sound Waves
Sound is created by our vocal cord due to
air in lungs
cilia in the throat
vibration in throat
vibration in lungs
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Sound Waves
The louder the sound, the more
the wave front
the wavelength
the energy
the frequency
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Sound Waves
The number of things that effect the sound produced by vibrating strings is
1
2
3
4
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Sound Waves
High frequency means
low pitch
high pitch
low amplitude
high wavelength
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Sound Waves
Vibrations are caused due to
change of temperature of air
change of pressure in air
effect of humidity on air
level of heat in air
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Sound Waves
If we put our ear by the wall, we will
not hear anything
hear everything from other side
some sounds from other side but not clearly
noise of traffic, aircrafts and machines
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Sound Waves
Percussion instruments produce notes when they are
struck
banged
blown
shaken
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Sound Waves
The loudness of sound depends on
wave front
frequency
amplitude
wavelength
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Sound Waves
An example of wind instrument is
drum
flute
piano
violin
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