Exam 1

Question 1

Unrelated

Answer 1

Two items not associated

Ex) temperature is unrelated to the day of the week

Question 2

Related/proportional

Answer 2

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

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

Question 3

Directly related/ directly proportional

Answer 3

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

Question 4

Inversely related/ proportional

Answer 4

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

Question 5

Reciprocal relationship

Answer 5

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

1/2 x 2 = 1

Question 6

____ make a numerical answer comprehensive

Answer 6

Units

Question 7

How many lbs in a liter?

Answer 7

2.2 lbs = 1 liter

Question 8

Increase by a factor means

Answer 8

Multiply by that number

Question 9

Decrease by a factor means

Answer 9

Divide by that number

Question 10

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

Answer 10

Unitless

Question 11

Are reciprocal numbers inverse?

Answer 11

Yes, bc when one increases, the other decreases

Question 12

Name two reciprocals

Answer 12

Period and frequency

Question 13

Units of length

Answer 13

Distance or circumference: cm or ft

Question 14

What are units of area

Answer 14

Cm^2 or ft^2

Question 15

Units of volume?

Answer 15

Cm^3 or ft^3

Question 16

How many cm in 1 inch?

Answer 16

2.54 cm = 1inch

Question 17

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

Answer 17

Less than one

Question 18

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

Answer 18

1 and 10

Question 19

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

Answer 19

Greater than 10

Question 20

What is a sound/acoustic wave?

Answer 20

• 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

Question 21

What is media?

Answer 21

Biologic tissue

Question 22

What does compressed and rarefied mean?

Answer 22

Compressed- pressed down

Rarefied- stretched

Question 23

The effects of the medium upon the sound wave

Answer 23

Acoustic propagation properties

Question 24

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

Answer 24

Biologic effects

Question 25

What are the 3 acoustic variables and what are their units?

Answer 25

Pressure= Pa (pascals) force/ area

Density= (kg, cm^3) mass/volume

Distance= (cm, ft, mile) measure of particle motion

Question 26

Define pressure

Answer 26

Concentration of force in an area

Question 27

Define density

Answer 27

Concentration of mass in a volume

Question 28

Define distance

Answer 28

Measure of a particle motion

Question 29

10^9

Answer 29

Giga - billion

G

Question 30

10^6

Answer 30

Mega - million

M

Question 31

10^3

Answer 31

Kilo - thousand

k

Question 32

10^2

Answer 32

Hecto- hundred

h

Question 33

10^1

Answer 33

Deca - ten

da

Question 34

10^-1

Answer 34

Deci- tenth

d

Question 35

10^-2

Answer 35

Centi - hundredth

c

Question 36

10^-3

Answer 36

Milli - thousandth

m

Question 37

10^-6

Answer 37

Micro - millionth

u

Question 38

10^-9

Answer 38

nano - billionth

n

Question 39

In reference to the metric system, what is an example of a reciprocal?

Answer 39

Giga and nano
-billion and billionth

Mega and micro
-million and millionth

Question 40

Sound waves are also known as

Answer 40

Acoustic waves

Question 41

What are 7 acoustic parameters? (Must be in order)

Answer 41

Period
Frequency 
Amplitude
Power
Intensity 
Wavelength 
Propagation speed

(Parents Frequently Act Powerful in Waves)

Question 42

What is a transverse wave?

Answer 42

Particles move in a direction that is perpendicular to the direction that the wave propagates (UP AND DOWN)

Question 43

What is a longitudinal wave?

Answer 43

Particles move in the same direction that the wave propagates (LEFT TO RIGHT)

Question 44

What type of wave is sound?

Answer 44

Longitudinal

Question 45

What is an in-phase wave?

Answer 45

When their peaks occur at the same time and at the same location (in step with one another)

Question 46

Define constructive interference

Answer 46

When two in phase waves come together, resulting in one larger wave

Question 47

Destructive interference

Answer 47

When two destructive waves come together resulting in a one smaller wave

Question 48

What happens when out of phase waves with equal amplitude come together?

Answer 48

They may cancel each other out

Question 49

What happens when the frequencies of the waves differ?

Answer 49

Both constructive and destructive interference occurs

Question 50

mm= ___

Answer 50

Millimeters= CC (cubic centimeters)

Question 51

10mm=

Answer 51

1cm

Question 52

One example of why graphs are used?

Answer 52

To show the velocity of blood