Question

Which two characteristics make electromagnetic waves effective in communication?

A.
They do not require a medium to carry information.
B.
They move faster through matter than through space.
C.
They carry more energy than visible light.
D.
They carry information very quickly.

Answer 1

a and d

Step-by-step explanation:

i got it right

Answer 2

A. They do not require a medium to carry information.

D. They carry information very quickly.

Step-by-step explanation:

The two characteristics that makes electromagnetic waves effective in communication is that they do not require a medium to carry information and they move information very quickly.

• Electromagnetic waves are produced by the vibration between electrical and magnetic fields.
• These waves are notable for being able to propagate without requiring any medium for their movement.
• They also have very fast speed.
• The speed of all electromagnetic waves is equal to that of light.