Physics I Exam 1 Review

Front

Convert: 6.784 cm to mm

Back

67.84 mm

Front

In air, sound travels 330 m/s. How far will it travel in 7 seconds?

Back

2,310 m

Front

What does a higher returning frequency in a spectral Doppler signal indicate?

Back

The blood is moving toward the transducer.

Front

What does a lower returning amplitude in a spectral Doppler signal indicate?

Back

The blood is moving away from the transducer.

Front

What acoustic parameter is determined by both the ultrasound machine and the medium?

Back

Wavelength.

Front

What is the formula to calculate distance traveled by sound?

Back

Distance = Speed × Time.

Front

What is the speed of sound in air?

Back

Approximately 330 m/s.

Front

What is the Doppler effect?

Back

The change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.

Front

What does a negative Doppler shift indicate?

Back

The object is moving away from the observer.

Front

What is frequency in the context of sound waves?

Back

The number of cycles of a wave that pass a point in one second.