sound Flashcards

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1
Q

shape of sound wave

A

longitudinal wave

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2
Q

how is sound created?

A

sound waves are created by vibrations in a medium in the direct of motion of propagation

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3
Q
A
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3
Q

echoes

A

reflections of sound

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4
Q
A
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5
Q
A
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5
Q
A
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6
Q
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7
Q
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8
Q
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9
Q
A
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10
Q

pitch

A

the effect produced in the ear due to the sound of a particular frequency

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11
Q

what is pitch directly proportionate to?

A

frequency

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11
Q

loudness

A

the subjective term describing the strength of the ear’s perception of a sound

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11
Q

what is loudness directly proportionate to?

A

amplitude

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11
Q

ultrasound

A

sound with frequencies between 20 and 100kHz

11
Q

how is an image created through ultrasound?

A

when a wave encounters a boundary between two media, part of the wave is reflected, part is absorbed and part is transmitted