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Speech Science > Module 2 > Flashcards

Module 2 Flashcards

Describing and explaining Motion

1
Q

Why does sound require vibrations ?

A

-The propagation of a pressure wave
- a sound wave was in time and space
- pressure is both (-) and (+) pressure

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2
Q

What is measured by
(g) and is the amount of matter present ?

A

Mass

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3
Q

What is measured by (g/cm3) and is consider to be the gravitational force exerted on a mass by the earth ?
Example : Scale

A

Weight

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4
Q

What is the measured by (N) and is consider to be the amount of mass per unit of volume ?
( also can have a higher density of there is more mass( D=m/v)

A

Density

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5
Q

( Blank) is the ability to resist change to its original shape or volume by its tendency to return to its former volume or shape.

A

Elasticity

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6
Q

Air has a high ( blank ) .

A

Elasticity

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7
Q

All bodies that can vibrate to transmit sound must have ?

A

mass and elasticity

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8
Q

( Blank) Law is the change in length of a material is proportional than the force applied to it .
The harder you pull depends on the stretch of the object
Example : Skin

A

Hooke’s

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9
Q

What is newtons first law of motion ?

A

Inertia

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10
Q

( Blank) is the tendency of a body in motion to remain in motion and the tendency of a body at rest to stay at rest . In the absence of an extra force
- directionally proportional

A

Inertia

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11
Q

More ( blank) = More Inertia
Story time : Van vs. ball
because the van has more mass which mean more weight than the ball , it Also has more inertia meaning it will be hard to more than the ball .

A

Mass

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12
Q

Force- resting postion =

A

Equilibrium

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13
Q

Force applied =

A

Displacement

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14
Q

When force disturbs equilibrium it causes ..

A

Vibration

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15
Q

What comes about as a result of the 2 opposing forces of elasticity and inertia working against each other in order to create vibration ?

A

Vibratory motion

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16
Q

When elasticity is in play , 2 things happen :

A
  1. Compression
  2. Rarefaction
17
Q

When elasticity is in play , the first thing that happens is ( blank) , which is the region in space with a high density of particles
- postive pressure

A

Compression

18
Q

When elasticity is in play , the second thing that happens is ( blank), which is the region in space with less density particles
-negative pressure

A

Rarefaction

19
Q

Compression and rarefaction CANT NOT work without ?

A

Elasticity and inertia

20
Q

what is the force applied times the distance moved? (W=Fd )

A

Work

21
Q

What is stored energy ?

A

potential energy

22
Q

What is the energy of motion ?

A

Kinetic energy

23
Q

What is the opposition to motion ?

A

frictional resistance

24
Q

( Blank) is the max. displacement of the particles of a medium , the distance between baseline and maximum displacement .

A

Amplitude

25
Q

What relates to loudness ?

A

Intensity

26
Q

( Blank) is the number of cycles completed per second .
This relates to pitch

A

Frequency

27
Q

( Blank) is the time in seconds that it takes for a vibration to complete one entire cycle of vibration
- has to have both (-) and (+)

A

Period

28
Q

If frequency is going up than ( blank ) is going down and visa vera

A

period

29
Q

( Blank) is the rate of sound waves propagation on the characteristics of air

A

Speech of sound

30
Q

What happens when mediums are disturbed ?

A

The frequency of air molecules depends on the frequency of vibration of the source

31
Q

Cycles per second =

A

rate of vibratory movement

32
Q

Imagine you have a string with a ball ties to the end . Three things are going to occur before and after the string is moved .
First thing is Inertia
- The tendency of a body in motion to remain in motion and the tendency of a body at rest to stay at rest . In the absence of an extra force
Second thing is Elasticity
-The ability to resist change to its original shape or volume by its tendency to return to its former volume or shape.
Third thing is Displacement
- Force applied
This is recognized as the …

A

Pendular Motion

33
Q

Transverse Waves

A

Cause the medium to move perpendicular to the direction of the wave.

34
Q

Longitudinal Waves

A

Cause the medium to move parallel to the direction of the wave.
Best represent a Sound Wave

35
Q

The following steps are an example of :
A.
You have a tuning fork and their is being force applied to it
which cause___________ Displacement

A

Displacement of Tuning Forks

36
Q
A

Speech Science (8 decks)

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