Sound

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Eternal

Cards (22)

Transverse wave 
The oscillations are perpendicular to the direction of energy transfer.
Waves 
Transfers of energy, not matter. They involve vibrations (oscillations)
Longitudinal waves 
The oscillations are parallel to the direction of energy transfer.
Transverse waves 
The oscillations are perpendicular to the direction of energy transfer.
Longitudinal waves 
Sound
Slinky
Earthquake
Amplitude - A 
The maximum displacement from the mean position.
Period - T 
The time taken (in seconds) for one complete oscillation. It is also the time taken for a complete wave to pass a given point.
Frequency - f 
The number of oscillations in one second. Measured in Hertz.
When the frequency increases 
The time period gets shorter
When the frequency decreases 
The time period gets longer
Wavelength - λ 
The length of one complete wave.
Amplitude and Frequency 
Low amplitude, low frequency
Low amplitude, high frequency
High amplitude, low frequency
High amplitude, high frequency
Longitudinal wave 
The oscillations are parallel to the direction of energy transfer
Speed of Sound 
Sound moves at about 343 meters per second in air. It moves much faster in a solid
Amplitude 
Volume. If you increase the amplitude/volume a note sounds louder. If you decrease the amplitude/volume a note sounds quieter.
Frequency 
Pitch. The number of oscillations in one second. Measured in Hertz. If you increase the frequency/pitch a note sounds higher. If you decrease the frequency/pitch a note sounds lower.
Oscilloscope: A machine we use to represent waves.
Label your ear 
Eardrum
Auditory Nerve
Small Bones
Cochlea
Anvil
Stirrup
Pinna
Ear Canal
Hammer
Ultrasound 
Above 20 kHz
the ear is a complex organ that is responsible for hearing and balance.
A) pinna
B) eardrum
C) ossicles
D) ear canal
E) cochlea
F) auditory nerve
G) eustachian tube
$T=$ $1/f$ T stands for period and f is frequency.
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