1-3

Question 1

All of them are acoustic parameters except

Answer 1

Pressure

Question 2

Which of the following best describes sound waves?

Answer 2

Longitudinal. Pressure waves

Question 3

What units are used to report the pressure of a sound beam?

Answer 3

Pascals

Question 4

Which of the following waves in infrasonic?

Answer 4

2hz

Question 5

Which of these waves are used in diagnostic sonography?

Answer 5

4MHz

Question 6

Which of the following waves has the longest period?

Answer 6

6hz

Question 7

Of the four waves whose periods are listed below, which has the lowest frequency?

Answer 7

8ms

Question 8

If the amplitude of a wave is increased to 3 times it’s original value, the intensity is increased by 6 times.

Answer 8

False

Question 9

Propagation speed increases as frequency increases.

Answer 9

False

Question 10

What is the wavelength of a wave with an unknown frequency traveling in soft tissues?

Answer 10

0.51mm

Question 11

Which of the following characteristics will create the fastest speed of sound?

Answer 11

Low density, high stiffness

Question 12

Which type of waves will exhibit both constructive and destructive interference?

Answer 12

Waves of different frequency

Question 13

What is the name of the horizontal axis of a graph?

Answer 13

X-axis

Question 14

Sound can be characterized as:

Answer 14

Cyclical oscillations in certain variables

Question 15

The sonographer has the ability to change the period of an ultrasound wave that is produced by a basic transducer

Answer 15

False

Question 16

Which of the following cannot be considered a unit of frequency?

Answer 16

Cycles

Question 17

What establishes the frequency of an ultrasound wave?

Answer 17

The transducer

Question 18

An an ultrasound wave travels through the body, it’s amplitude usually:

Answer 18

Decreases

Question 19

What are the units of intensity

Answer 19

Watts/ cm^2

Question 20

The wavelength of an ultrasonic wave is determined by:

Answer 20

Both A and B