ARDMS SPI Exam (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Grade A

ARDMS SPI Exam (Latest 2023/ 2024

Update) Questions and Verified Answers|

100% Correct| Grade A

Q: What does rarefied mean?

Answer:

Stretched apart

Q: Sound travels in a ________ line.

Answer:

Straight

Q: Sound waves are ____________ waves.

Answer:

Longitudinal

Q: What is the propagation speed dependent on?

Answer:

The medium

Q: Are there any biologic effects on tissue?

Answer:

No

Q: Sound waves are identified by

Answer:

Oscillations in acoustic variables

Q: What are the three acoustic variables? (With their units)

Answer:

pressure - pascals (Pa), density - kg/cm^3, distance - cm, mm

Q: If something other than pressure, density, or distance (particle motion) rhythmically

oscillates in a wave, then the wave...

Answer:

Is not a sound wave

Q: Sound waves are also known as

Answer:

Acoustic waves

Q: What are the seven Acoustic Parameters?

Answer:

Period, frequency, amplitude, power, intensity, wavelength, propagation speed

Q: Particles move in a direction that is perpendicular to the direction that the wave propagates

in what wave?

Answer:

Transverse wave

Q: Particles move in the same direction that the wave propagates in a ____________ wave.

Answer:

Longitudinal

Q: When are a pair of waves considered in-phase?

Answer:

When their peaks and troughs occur at the same time and at the same location

Considered "in step"

Q: What happens when two waves are out-of-phase?

Answer:

Their peaks occur at different times, and so do their troughs

"out of step"

Q: What is interference?

Answer:

When more than one beam travels in a medium and arrive at the same location at exactly the

same time

These waves lose their individual characteristics and combine to form a single wave

Q: The interference of in-phase waves results in a single wave of _________ amplitude. This is

called ___________.

Answer:

Greater, constructive interference

(Larger Wave)

Q: The interference of a pair of out-of-phase waves results in the formation of a single wave of

_____ amplitude. This combination is called _____________________.

Answer:

Lesser, destructive interference

(Smaller Wave)

Q: When frequencies of waves differ, what kind of wave occurs?

Answer:

Both constructive and destructive interference

Q: What do waves transfer from one location to another?

Answer:

Energy

Q: Two waves are traveling in a medium and arrive at a location at the same time. What event

takes place?

Answer:

Interference