chapter 1-3

Question 1

unrelated

Answer 1

2 subjects not associated w/ each other

Question 2

related / proportional

Answer 2

2 subjects associated w/ each other

Question 3

directly related / proportional

Answer 3

2 subject related, 1 ⬆️, 1 ⬆️

Question 4

inversely related / proportional

Answer 4

2 subjected related 1 ⬆️, 1 ⬇️

Question 5

reciprocal

Answer 5

2 # w/ reciprocal , multiplied tg = 1

Question 6

what kind of relationship does reciprocal have ?

Answer 6

Inversely relationship 1 ⬆️, 1 ⬇️

Question 7

period & frequency are …

Answer 7

Reciprocal

Question 8

units : time

Answer 8

s, ms, microseconds

Question 9

units : distance

Answer 9

meters, mm,km

Question 10

units : frequency

Answer 10

hertz , MHz , KHz

Question 11

units : velocity

Answer 11

m/s

Question 12

units : area

Answer 12

cm2,km2

Question 13

units : volume

Answer 13

cm3 , ft3

Question 14

Scientific notation w/ positive exponent has a value

Answer 14

Greater than 10

Question 15

Scientific notation w/ negative exponent has a value

Answer 15

less than 1

Question 16

waves

Answer 16

disturbance > travels through space / medium transferring energy > 1 location to another

Question 17

classification : waves
( 2 types)

Answer 17

1. Mechanical ( ultrasound
   2.Electromagnetic

Question 18

mechanical waves require …
& travel through ….

Answer 18

medium
molecules/ particles within medium vibrate / colide w/ each other passing on energy

Question 19

sound can travel through

Answer 19

air
liquid
soilds

Question 20

Electromagnetic travel through

Answer 20

medium / vacuum

Question 21

vacuum

Answer 21

empty space, void : matter

Question 22

sound pulse created by

Answer 22

transducer travels through biologic tissue / media

Question 23

compressed

Answer 23

squeezed tg

Question 24

rarefied

Answer 24

stretched apart

Question 25

Mechanical wave classification

Answer 25

1. longitudinal 2. transverse

Question 26

sound is what kind of wave ?

Answer 26

mechanical

Question 27

what wave is the particle in medium vibrate back and forth from fixed position ?

Answer 27

Mechanical

Question 28

what wave is sound beam parallel to particle motion

Answer 28

Longitudinal

Question 29

waves carry ...

Answer 29

energy

Question 30

what particle motion is perpendicular o path : beam

Answer 30

transverse

Question 31

pair wave that occurs at the same time / location

Answer 31

in phase

Question 32

in phase meet they create .... waves

Answer 32

Constructive interference

Question 33

pair of wave that occur at different time

Answer 33

out - phase

Question 34

out - phase meet, they create ... wave

Answer 34

Destructive interference

Question 35

2 out-phase wave > equal amplitude what can occur

Answer 35

complete destructive inference

Question 36

sound ranges below 20 Hz

Answer 36

infrasonic / infrasound

Question 37

sound ranges b/w 20 Hz - 20 kHz

Answer 37

audible

Question 38

sound range above 20kHz

Answer 38

ultrasonic / ultrasound

Question 39

acoustic variable

Answer 39

measurable changes > occurs within medium as wave travel

Question 40

3 acoustic variable

Answer 40

1. pressure 2. density 3. distance

Question 41

acoustic variable is used >

Answer 41

Distinguish sound wave

Question 42

pressure

Answer 42

Concentration : force > an area

Question 43

units : pressure

Answer 43

pascals (pa)

Question 44

density

Answer 44

Concentration : mass > volume

Question 45

units : density

Answer 45

per volume kg/cm3

Question 46

distance

Answer 46

measurements : particle displacement from its original position

Question 47

units : distance

Answer 47

cm ft inches miles

Question 48

7 parameters > describes feature : sound wave

Answer 48

1. frequency 2. period 3. wavelength 4. speed 5.amplitude 6. power 7.intensity

Question 49

frequency

Answer 49

how often an event occur > particular time frame OR how many cycle occurs > 1 sec

Question 50

units : frequency

Answer 50

hertz

Question 51

frequency determined by

Answer 51

sound source only ( transducer)

Question 52

can frequency be adjustable

Answer 52

No ( unless you change your transducer

Question 53

is frequency affect or determined by medium

Answer 53

No, if medium changes frequency will remain the same

Question 54

period

Answer 54

time it take > 1 full cycle to occur

Question 55

period & frequency relationship

Answer 55

reciprocal

Question 56

units : period

Answer 56

time s ms

Question 57

Symbol for period

Answer 57

T

Question 58

period & frequency ..... related

Answer 58

inversely F⬆️,P⬇️ F⬇️,P⬆️

Question 59

period determined by

Answer 59

sound source only

Question 60

can period be adjusted

Answer 60

No

Question 61

propagation speed

Answer 61

rate at which sound wave through medium

Question 62

symbol for speed

Answer 62

C

Question 63

speed determined by 2 characteristic

Answer 63

1. stiffness 2. density

Question 64

speed is determined by

Answer 64

only medium through which its traveling

Question 65

speed : sound through soft tissue =

Answer 65

1540 / 1.54 mm/us

Question 66

density / stiffness

Answer 66

material determine how fast sound can travel through it

Question 67

stiffness

Answer 67

ability : object > resist compression

Question 68

density

Answer 68

weight : material

Question 69

stiffness & Speed ... related

Answer 69

Directly s⬆️,C ⬆️

Question 70

density & speed ..... related

Answer 70

inversely d⬆️,C⬇️

Question 71

what has a greater affect of propagation speed wave

Answer 71

stiffness

Question 72

another names for stiffness

Answer 72

bulk modulus

Question 73

opposite of stiffness

Answer 73

elasticity / compressibility

Question 74

3 bigness parameter

Answer 74

1. amplitude 2. density 3. distance

Question 75

amplitude

Answer 75

difference b/w max value & average / undisturbed value : acoustic variable

Question 76

amplitude determined by

Answer 76

sound source

Question 77

can amplitude be adjusted

Answer 77

Yes

Question 78

units : amplitude

Answer 78

any acoustic variable 1. pressure 2. density 3. distance

Question 79

how is amplitude measured

Answer 79

midline (undisturbed) > max value

Question 80

peak - peak amplitude = ....... amplitude

Answer 80

twice

Question 81

power

Answer 81

rate : energy transfer

Question 82

unit : power

Answer 82

watts

Question 83

power determined by

Answer 83

sound source

Question 84

power relationship to amplitude2

Answer 84

Proportional

Question 85

power / amp2 .... related

Answer 85

directly ⬆️,⬆️

Question 86

wavelength

Answer 86

distance / length : 1 wave

Question 87

units : wavelength

Answer 87

distance mm cm length meter

Question 88

wavelength determined by

Answer 88

both source and medium

Question 89

wavelength / period (Time) .... related

Answer 89

directly ⬆️⬆️

Question 90

wavelength / frequency .... related

Answer 90

inversely ⬆️⬇️

Question 91

period (time) / frequency .... related

Answer 91

inversely ⬆️⬇️

Question 92

intensity

Answer 92

concentration : energy > sound beam

Question 93

Intensity related to how power >

Answer 93

wave spreads or disturbance

Question 94

intensity determined by

Answer 94

sound source

Question 95

intensity / power ... relationship

Answer 95

Proportional

Question 96

power / amplitude .... Relationship

Answer 96

Proportional

Question 97

intensity / amplitude ......relationship

Answer 97

Proportional