Question

How are electromagnetic waves different from mechanical waves?

Electromagnetic waves are all high frequency; mechanical waves are all low frequency.

Electromagnetic waves can travel through a vacuum; mechanical waves require a medium.

Electromagnetic waves are visible; mechanical waves are invisible.

Electromagnetic waves always reflect; mechanical waves always refract.

Answer 1

The answer is B) Electromagnetic waves can travel through a vacuum; mechanical waves require a medium.

Answer 2

Electromagnetic waves can travel through a vacuum; mechanical waves require a medium.