Question

Which of these is one way that mechanical waves differ from electromagnetic waves?

Question 4 options:

Mechanical waves require energy and electromagnetic waves do not.


Mechanical waves require a medium and electromagnetic waves do not.


Electromagnetic waves require a medium and mechanical waves do not.


Mechanical waves transmit matter and electromagnetic waves transmit energy.

Answer 1

Mechanical waves require a medium whilst electromagnetic waves do not.
Think about it: you can't hear in space!

Answer 2

Mechanical waves transmit matter and electromagnetic waves transmit energy.