Microwaves have short ________
and are reflected by small objects. A radar system
uses an antenna to _____________
continuously the
surrounding area. The ________
sends out
a narrow beam of microwaves in short pulses. A
distant object reflects some of the signal ____________
to the ____________
[back, scan, receiver, transmitter, wavelength]
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Answer:
wavelength,scan, transmitter,back, receiver
Explanation:
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