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SPI > SOUND > Flashcards

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?

A

Distance

17
Q

What are the units for density?

A

kg/cm3

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?

A

Propagate

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?

A

In Step

24
Q

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

A

Out of step

25
Q

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?

A

The waves combine to form a single wave (interference)

26
Q

What type of wave do you see constructive interference with?

A

In-phase waves.

27
Q

A combination of in-phase waves results in what?

A

Constructive interference (single wave with greater amplitude)

28
Q

What type of wave do we see destructive interference with?

A

Out-of phase waves.

29
Q

With destructive interference, does the wave have greater or lesser amplitude?

A

Lesser

30
Q

A Combination of out-of phase waves results in what?

A

Destructive interference
(single wave with lesser amplitude)

31
Q

What type of interference occurs with waves of different frequencies?

A

Both destructive and constructive interference

32
Q

True or False, sound waves are a series of compressions and rectification.

A

FALSE. Sound waves are a series of rarefactions and compressions

33
Q

How is speed and compressibility related?

A

inversely

34
Q

With constructive interference does the wave have greater or lesser amplitude.

A

Greater

SPI (10 decks)

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