Wave Characteristics And Sound Of Sound

Question 1

There are measurable quantities that vary within a medium as sound propagates.

Answer 1

Acoustic Variables

Question 2

It is the amount of force in a given area

Answer 2

Pressure

Question 3

Relationships of amplitude, power and intensity:

1. ) ⬆️ Power = ____ intensity
2. ) ⬆️ Area = ____ density
3. ) ⬇️ Area = ____ intensity

Answer 3

1. )⬆️
2. )⬇️
3. ) ⬆️

Question 4

It is the distance moves by the molecules in the medium

Answer 4

Particle motion

Question 5

It is the power per unit area

Answer 5

Intensity

Question 6

Relationships of amplitude, power and intensity:

When power increases = intensity _______

Answer 6

increases

Question 7

It isbthe rate at which the work is done

Answer 7

Power

Question 8

The easier a medium is to reduce in volume =

Answer 8

The higher its compressibility

Question 9

It is the concentration of matter

Answer 9

Density

Question 10

It is the speed at which sound moves through a medium

Answer 10

Speed propagation

Question 11

It refers to the ability if an object to return to its original shape.

Answer 11

Elasticity

Question 12

It is the mass per unit volume

Answer 12

Density

Question 13

What is the relationship of the velocity of sound in amedium to density?

Answer 13

Inversely proportional

Question 14

It is the concentration of heat energy

Answer 14

Temperature

Question 15

On n the basis of density alone, sound wave have greater velocity in ____ than in _____.

Answer 15

air, bone

Question 16

Relationships of amplitude, power and intensity:

When area decreases = intensity _______, why?

Answer 16

Increases, bc power is more concentrated

Question 17

What is the relationship of the velocity of sound through a medium to compressibility of the medium?

Answer 17

Inversely proportional

Question 18

It is the measure of how far variable gets away from its normal undistributed value

Answer 18

Amplitude

Question 18

Relationships of amplitude, power and intensity:

When area increases = density _______, why?

Answer 18

Decreases, bc power is less concentrated

Question 20

It is the reciprocal of compressibility

Answer 20

Bulk modulus

Question 21

It is the fraction of the incident intensity transmitted into the second medium

Answer 21

Intensity transmission coefficient

Question 22

What is the relationship of the velocity of sound through a medium to the bulk modulud of the medium?

Answer 22

Directky proportional

Question 23

When we combine the comressibility and density into an equation, we can determine?

Answer 23

Acoustic velocity

Question 24

Stiffer media have _______ sound speeds.

Answer 24

Higher

Question 25

Relation of acoustic impedance and refelction: | In substance with same Z, how much is the total transmission energy and is there any reflection?

Answer 25

Total transmission | There is no refelction

Question 26

How to get the propagation speed of sound?

Answer 26

C= wavelength x frequency

Question 26

The denser the medium = the ______ the propagation speed.

Answer 26

Lower

Question 28

It indicates tge fractional decreasevin the volume when pressure is apploed to the material

Answer 28

Compressibility (K)

Question 30

Relative measurement that compare value at one point to anoth er point. It is used to express a change in two values with same units.

Answer 30

Decibel

Question 31

It is the property of a substance, which describes how the particles of that substance behave when subjected to a spund wave

Answer 31

Acoustic Impedance

Question 31

Acoustc impedance is a product of?

Answer 31

Tissue density and speed of sound

Question 31

Relation of acoustic impedance and refelction: | In substance with small difference of Z, how much is the transmission energy and is there any reflection?

Answer 31

There is a little energy reflected but most of the energy is transmitted.

Question 33

It is the difference in acoustic impedance

Answer 33

Acoustic impedance mismatch

Question 34

Relation of acoustic impedance and refelction: | In substance with large difference in Z, how much is the transmission energy and is there any reflection?

Answer 34

There is a large amount of reflection and a little energy that is trasmitted

Question 35

It gives the proportion of energy reflected from an interface bet. two substances.

Answer 35

Intensity reflection Coefficient

Question 36

It is the resistance of a material to compression.

Answer 36

Stiffness