Exam 1 Flashcards

1
Q

Unrelated

A

Two items not associated

Ex) temperature is unrelated to the day of the week

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2
Q

Related/proportional

A

Two items that are associated but relationship doesn’t need to be specified

Ex) weight is related to dieting
Santa is related to Christmas

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3
Q

Directly related/ directly proportional

A

Two items are associated (when one increases the other increases - both go the same way)

Ex) clothing size is directly related to ones weight
Skill is directly proportional to practice
Quality of wine is directly related to age

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4
Q

Inversely related/ proportional

A

Two items are associated but one item increases while the other item decreases

Ex) golf score is inversely related to skill
A car’s gas mileage is inversely related to its engine size

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5
Q

Reciprocal relationship

A

When two numbers with a reciprocal relationship are multiplied and the answer is 1

1/2 x 2 = 1

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6
Q

____ make a numerical answer comprehensive

A

Units

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7
Q

How many lbs in a liter?

A

2.2 lbs = 1 liter

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8
Q

Increase by a factor means

A

Multiply by that number

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9
Q

Decrease by a factor means

A

Divide by that number

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10
Q

A number followed by the word “percent” is ____.

A

Unitless

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11
Q

Are reciprocal numbers inverse?

A

Yes, bc when one increases, the other decreases

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12
Q

Name two reciprocals

A

Period and frequency

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13
Q

Units of length

A

Distance or circumference: cm or ft

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14
Q

What are units of area

A

Cm^2 or ft^2

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15
Q

Units of volume?

A

Cm^3 or ft^3

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16
Q

How many cm in 1 inch?

A

2.54 cm = 1inch

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17
Q

A number in scientific notation form with a negative exponent has a value of ___

A

Less than one

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18
Q

A number is scientific notation form with an exponent of zero has a value btw ___?

A

1 and 10

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19
Q

A number in scientific notation form with a positive exponent has a value of ____?

A

Greater than 10

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20
Q

What is a sound/acoustic wave?

A
  • It carries energy
  • sound is a mechanical wave
  • it can’t travel through a vacuum, must travel through a medium
  • they can be compressed and rarefied
  • sound travels in a straight line
  • sound waves are longitudinal
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21
Q

What is media?

A

Biologic tissue

22
Q

What does compressed and rarefied mean?

A

Compressed- pressed down

Rarefied- stretched

23
Q

The effects of the medium upon the sound wave

A

Acoustic propagation properties

24
Q

The effects of the sound wave upon the biologic tissue through which it passes

A

Biologic effects

25
What are the 3 acoustic variables and what are their units?
Pressure= Pa (pascals) force/ area Density= (kg, cm^3) mass/volume Distance= (cm, ft, mile) measure of particle motion
26
Define pressure
Concentration of force in an area
27
Define density
Concentration of mass in a volume
28
Define distance
Measure of a particle motion
29
10^9
Giga - billion G
30
10^6
Mega - million M
31
10^3
Kilo - thousand k
32
10^2
Hecto- hundred h
33
10^1
Deca - ten da
34
10^-1
Deci- tenth d
35
10^-2
Centi - hundredth c
36
10^-3
Milli - thousandth m
37
10^-6
Micro - millionth u
38
10^-9
nano - billionth n
39
In reference to the metric system, what is an example of a reciprocal?
Giga and nano -billion and billionth Mega and micro -million and millionth
40
Sound waves are also known as
Acoustic waves
41
What are 7 acoustic parameters? (Must be in order)
``` Period Frequency Amplitude Power Intensity Wavelength Propagation speed ``` (Parents Frequently Act Powerful in Waves)
42
What is a transverse wave?
Particles move in a direction that is perpendicular to the direction that the wave propagates (UP AND DOWN)
43
What is a longitudinal wave?
Particles move in the same direction that the wave propagates (LEFT TO RIGHT)
44
What type of wave is sound?
Longitudinal
45
What is an in-phase wave?
When their peaks occur at the same time and at the same location (in step with one another)
46
Define constructive interference
When two in phase waves come together, resulting in one larger wave
47
Destructive interference
When two destructive waves come together resulting in a one smaller wave
48
What happens when out of phase waves with equal amplitude come together?
They may cancel each other out
49
What happens when the frequencies of the waves differ?
Both constructive and destructive interference occurs
50
mm= ___
Millimeters= CC (cubic centimeters)
51
10mm=
1cm
52
One example of why graphs are used?
To show the velocity of blood