The signal detected by a Doppler radar is
A) a radiowave emitted by lightning.
B) a soundwave produced by thunder.
C) a radiowave reflected by precipitation.
D) a soundwave produced by wind shear.

Question

Quizplus · Accepted Answer

Doppler radar uses radiowaves to detect precipitation. The radiowave is emitted by the radar and then reflects off precipitation, which changes the frequency of the wave due to the Doppler effect. This change in frequency allows the radar to determine the velocity and direction of the precipitation. Lightning and thunder do not produce waves that can be detected by a Doppler radar, and wind shear produces soundwaves, not radiowaves.

The Signal Detected by a Doppler Radar Is