allerySONAR (SOund Navigation And Ranging) uses:
AUltrasound pulses and the time for the echo to return
BVisible light beams reflected from underwater objects
CRadio waves bouncing off the ocean surface
DInfrared rays detected by submarine sensors
Answer & Solution
Correct answer: A. Ultrasound pulses and the time for the echo to return
SONAR emits ULTRASOUND pulses underwater and measures the time for echoes to return.
Distance = (speed × time) / 2. Used to find ships, fish, ocean floor depth.
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