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Sound, Motion And Waves > Sound > Flashcards

Sound Flashcards

1
Q

Transverse wave

A

a wave vibrating at right angles to the direction the wave is traveling

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2
Q

Trough

A

The lowest point of the wave

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3
Q

Wavelength

A

Distance from top of the crest to the top of the next one

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4
Q

Crest

A

High point of a wave

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5
Q

Out of phase

A

The overlapping of two waves such that the crest of one is aligned with the eh trough of another

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6
Q

Doppler effect

A

The change in pitch heard when an object is emitting a sound and moving moving toward or away from the listener

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7
Q

How are constructive and destructive interference similar and different ?

A

Similar : both lead to change in amplitude

Different : constructive interference has a increase in amplitude

Destructive interference amplitude cancels out

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8
Q

In phase

A

Occurs when two waves overlap

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9
Q

What is the range of human hearing ?

A

20-20,000

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10
Q

Amplitude

A

Height of the wave from zero

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11
Q

Resonance

A

Occurs when the frequency of a force vibration matches the natural frequency of the body

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12
Q

Compression

A

When they come together

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13
Q

Rarefaction

A

When it spreads out less force

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14
Q

What’s is the unit for frequency

A

Hertz

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15
Q

What is the units for wavelength

A

Cm/ s m/s

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16
Q

What is the unit fors for period

A

Seconds

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17
Q

What is the untie for velocity

A

Meters

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18
Q

What media can sound move through the fastest

A

A solid

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19
Q

What media can sound move after the fastest media ?

A

Liquid

20
Q

What media can sound move through the slowest

A

Gas

21
Q

What media can sound out move through and why

A

A vacuum , a space where there is no air . Can not be transmitted bc there is no air .

22
Q

Similarities / difference between a transverse wave and a longitudinal wave ?

A

Similar

Difference:direction the medium of the wave moves
Longitudinal- the motion of the medium is parallel to the direction of the wave . This means that the particles move left and right

Transverse the motion of the medium is a right angles to the direction of the wave.

23
Q

Constructive interference

A

When the a crest of one waves overlaps a crest of another wave to produce a wave of increase of amplitude

24
Q

Destructive wave

A

A combination of waves here crests of one overlaps the trough of another causing the wave To have a decrease in amplitude

25
Q

Nodes(standing wave )

A

Any part of a standing wave that remains stationary

26
Q

Antinodes (standing wave)

A

The position on a standing wave where the largest amplitudes occurs

27
Q

Ultra sonic

A

To high for you to hear

28
Q

Intra sonic

A

To low for you to hear

29
Q

The difference in size and mass between and mass between instruments

A

Frequency increases – pitch decreases

High pitch — high frequency
Higher the mass — lower the pitch
Shorter the air column —higher the pitch
Lower pitch — low frequency

30
Q

Stadium wave

A

A pulse that moves through the crowd at sporting events

31
Q

Shock wave

A

A cone shaped wave produced by an object moving at supersonic speed through a fluid

32
Q

Ear canal

A

Part of the outer ear that leads to the ear drum

33
Q

Semi circular

A

Consists of three fluid filled tubes at 90 degrees and 45 distress horizontal

34
Q

Cochlea

A

Snail shaped organ that’s responsible for detecting the pitch of a particular sound

35
Q

Sound

A

A longitudinal and compressional wave

36
Q

Frequency

A

The number of cycles per second that a sound makes .

37
Q

Period

A

Amount of time per cycle

38
Q

Natural frequency

A

The standard frequency at which an object vibrates when struck, plucked, bowed or blown into

39
Q

Refraction

A

Change in speed of wave when it

Moves from one medium to another

40
Q

Medium

A

A substance that carries a wave from one location to another

41
Q

What happen to Tacoma narrows bridge in 1940 at Washington ?

A

It was destroyed by a 40 mph wind. The wind produced a forced that resonated with natural frequency of the bridge . The amplitudes for higher and higher over several hours and collapsed

42
Q

Beats

A

Sounds produced when two waves slightly different frequency are played at the same time

43
Q

Pinna

A

Receives sound from the ear

44
Q

Forced vibration

A

Vibration of an object that is made to vibrate by another vibration object nearby

45
Q

Sonic boom

A

The sharp crack heard when the shock wave that sweeps begin a super sonic aircraft reaches the listener

46
Q

Wiggle in time and space

A

Wave

Sound, Motion And Waves (1 decks)

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