sound Flashcards

1
Q

how to find frequency

A

1/time or period

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2
Q

how to find speed

A

distance/time

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3
Q

how to find wave speed

A

frequency x wave length

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4
Q

how to find depth

A

1/2 x distance

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5
Q

<20Hz

A

infrasound

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6
Q

20Hz-20000Hz

A

audible sound

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7
Q

> 20000Hz

A

ultrasound

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8
Q

tera (T)

A

10^12

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9
Q

giga (G)

A

10^9

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10
Q

mega (M)

A

10^6

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11
Q

kilo (K)

A

10^3

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12
Q

centi (c)

A

10^-2

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13
Q

milli (m)

A

10^-3

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14
Q

micro (μ)

A

10^-6

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15
Q

nano (n)

A

10^-9

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16
Q

y-vs-x graph

A

displacement-position

17
Q

y-vs-t graph

A

displacement-time

18
Q

define echo

A

reflection of sound

19
Q

unit for frequency

20
Q

meaning of pitch

A

the feeling of “high” or “low” that is linked to the frequency of the sound

21
Q

define reverberation

A

Reverberation is multiple reflection of sound that occur due to the sound waves bouncing back and forth between the walls of a room

22
Q

amplitude

A

the loudest of a sound wave (the highest point in y in a graph)

23
Q

what helps absorb sound

A

curtains and carpets

24
Q

what is transverse wave?

A

a curve line graph
the particles in the medium move up and down perpendicular to the direction travel of the wave

25
what is longitudinal wave?
the particles in the medium moves to and fro in the same direction travel as the wave
26
what is wavelength
the length of one complete cycle
27
what is period
the time take to complete one cycle
28
what is frequency
the number of cycle per second
29
why too much reverberation can be a bad thing?
speeches cannot be heard
30
what is amplitude?
the highest point of graph