SOUND Flashcards

1
Q

What do waves carry from on location to another?

A

Energy

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2
Q

True or False, Light, sound, heat and magnetic are ALL forms of waves?

A

True

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3
Q

Can sound travel through a vacuum?

A

No

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4
Q

What does the word compressed mean?

A

squeezed together

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5
Q

What does the term rarefied mean?

A

Stretched apart

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6
Q

True or False, sound travels in a curved line?

A

False, sound travels in a straight line.

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7
Q

True or False, Sound waves are transverse waves?

A

False, sound waves are longitudinal waves.

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8
Q

What are the effects of the sound waves when passing through tissues?

A

Biological effects

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9
Q

What is another term for sound waves

A

Acoustic waves

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10
Q

What are three acoustic variables?

A

Distance, Pressure, and density

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11
Q

What are the 7 acoustic parameters used to describe characteristics of a wave.

A

Period
Frequency
propagation speed
amplitude
wavelength
intensity
power

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12
Q

What are the units for pressure?

A

Pascals

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13
Q

What is the term for concentration of mass in a volume?

A

Density

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14
Q

What are the units for distance?

A

Cm, miles, feet,mm.

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15
Q

What is the term for concentration of force in an area?

A

Pressure

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16
Q

What is the term for a measure in particle motion?

17
Q

What are the units for density?

18
Q

How do particles move in a transverse wave?

A

Perpendicular to the direction the wave transmits

19
Q

What is another word for transmit?

20
Q

How do particles move in a longitudinal wave?

A

In the same direction, the wave propagates.

21
Q

What kind of paired waves have their peaks occur at the same time and location?

A

In-phase waves

22
Q

What kind of paired waves have their maximum peaks and minimum peaks occur at different times?

A

Out-of-phase waves

23
Q

What is another name for the in-phase waves?

24
Q

What is another name for out-of-phase waves?

A

Out of step

25
What occurs when more than one sound beam travels in a medium and multiple beams arrive at an identical location at the exact same time?
The waves combine to form a single wave (interference)
26
What type of wave do you see constructive interference with?
In-phase waves.
27
A combination of in-phase waves results in what?
Constructive interference (single wave with greater amplitude)
28
What type of wave do we see destructive interference with?
Out-of phase waves.
29
With destructive interference, does the wave have greater or lesser amplitude?
Lesser
30
A Combination of out-of phase waves results in what?
Destructive interference (single wave with lesser amplitude)
31
What type of interference occurs with waves of different frequencies?
Both destructive and constructive interference
32
True or False, sound waves are a series of compressions and rectification.
FALSE. Sound waves are a series of rarefactions and compressions
33
How is speed and compressibility related?
inversely
34
With constructive interference does the wave have greater or lesser amplitude.
Greater