Audiology And Hearing

Front 1

Oscillations and

vibrations may be

transmitted to the what

Back 1

Surrounded space

Front 2

A vibration travelling

through space is called

Back 2

Wave motion or wave

Front 3

The process of conveying

energy through space via

a wave motion is called

Back 3

Propagation

Front 4

two basic classes of

motions for different types of wave motions

Back 4

Longitudinal and transverse

Front 5

Mechanical wave

Back 5

The transfer of mechanic energy from one molecule to another

Front 6

Examples of mechanical waves

Back 6

Sound waves, ocean waves , and earthquakes

Front 7

For a mechanical wave motion to exist it requires:

Back 7

Physical medium and a mechanical disturbance

Front 8

Longitudinal wave

Back 8

are waves in which the particles of the

medium are displaced in the same direction as the wave

propagation.

Front 9

Transverse waves

Back 9

waves in which the particles of the

medium are displaced in a direction that is parallel to the direction of wave propagation.

Front 10

sound generation

Back 10

the vibration of

sound source is conveyed to the surrounding molecules.

Front 11

The alternating series of compressions and

rarefactions in the medium are caused by the

Back 11

forward

and backward movements of acting force

Front 12

Compression

Back 12

bunching of particles causing increased density.

Front 13

Rarefaction

Back 13

is a spreading of particles causing decreased

density

Front 14

Sound is defined in three

basic ways:

Back 14

1. A disturbance in an elastic medium 2. A stimulus that causes an auditory sensation. 3. An auditory sensation

Front 15

Sound is a

Back 15

systematic pressure disturbance in which

a sound source creates regions of compression and

rarefaction.

Front 16

For a sound to occur as a

mechanic event, three things

are necessary

Back 16

An energy source

 A vibrating object

 An elastic medium

Front 17

sound source

Back 17

disturbance that produces a soundExample- A tuning fork, a bell, a drum, & human , vocal fold

Front 18

The most common and natural elastic

medium for communication via spoken

language is

Back 18

Air

Front 19

The medium through which

Back 19

Sound travels

Front 20

The rate at which sound travels through a medium is

called the

Back 20

Speed of sound (c)

Front 21

What affects the speed at witch sound travels

Back 21

Air pressure and air temperature

Front 22

Atmospheric pressure

Back 22

the result of the weight of

the atmosphere acting on a

specific surface

Front 23

The speed of sound depends on the medium’s:

Back 23

Density (ρ) and

 Stiffness (K).

Front 24

Speed of sound calculation

Back 24

340 m/s

Front 25

Wavelength

Back 25

the physical distance in space

occupied by one period of a wave.

Front 26

wavelength (λ) depends on the

Back 26

Speed of sound and the frequency of sound

Front 27

c is the

Back 27

speed of sound in m/s.

Front 28

sound pressure.

Back 28

The pressure caused by the vibration of the sound

source

Front 29

sound intensity (I).

Back 29

The amount of sound power that travels through a specific area