The Doppler radar uses the principle called Doppler ____ to measure the speed at which falling rain is moving horizontally toward or away from the radar antenna.
A)signal
B)radiance
C)acceleration
D)speedometer
E)shift

Question

Quizplus · Accepted Answer

The Doppler radar uses the principle called Doppler shift to measure the speed at which falling rain is moving horizontally toward or away from the radar antenna. This principle involves the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source.

The Doppler Radar Uses the Principle Called Doppler ____ to Measure