Radar detects objects by sending and receiving microwave signals. A student wants to design an object that cannot be detected by radar.

Question

What designs could the student use for the object to help it avoid radar detection? Select two designs that would help the object avoid detection.

A. Make the object with a material that reflects microwaves so that the radar gets the wrong signals.

B. Make the object with a material that absorbs microwaves so that the object doesn't return any signals.

C. Make the object with a material that blocks the travel of microwaves so that the radar gets different signals.

D. Make the object with a material that does not produce microwaves so that the device doesn't get any signals.

E. Make the object with a material that microwaves can travel through so that the object won't interfere with the radar signals.

Answer 1

To help the object avoid radar detection, the student could select the following two designs:

B. Make the object with a material that absorbs microwaves so that the object doesn't return any signals.
This design would prevent the radar from receiving a reflected signal, making the object less detectable.

C. Make the object with a material that blocks the travel of microwaves so that the radar gets different signals.
This design could disrupt the radar signals and further reduce detectability.

These choices focus on minimizing or eliminating the radar return signals, which is key to avoiding detection.