Question

Mechanical (sound) waves are unable to travel through a vacuum, such as through space, but radio waves are transmitted to Earth from satellites. How is this possible?

A) Radio waves are electromagnetic waves.
B) Satellites are located within our atmosphere.
C) Radio waves are very high energy mechanical waves.
D) Radio waves are changed to gamma rays for transmission.

Answer 1

The correct answer is A, Radio Waves are electromagnetic waves.

Answer 2

Radio waves are a kind of electromagnetic wave.

The answer is A.

Hope this helps,

kwrob