Question

Which statement about sound is true because it is a mechanical wave?

a) "Sound waves travel faster in a vacuum."
b) "Sound waves cannot propagate through solids."
c) "Sound waves require a medium to travel."
d) "Sound waves exhibit electromagnetic properties."

Answer 1

Sound waves require a medium to travel because they are mechanical waves.

Step-by-step explanation:

The correct statement about sound because it is a mechanical wave is: c) "Sound waves require a medium to travel."

Mechanical waves, including sound waves, require a medium to propagate. They cannot propagate through a vacuum. Light waves, on the other hand, are not mechanical waves and can travel through a vacuum.

Mechanical waves are waves that require a medium (solid, liquid, or gas) for their propagation. Unlike electromagnetic waves, which can travel through a vacuum, mechanical waves transfer energy through the oscillation or vibration of particles within a substance. There are two main types of mechanical waves: transverse waves and longitudinal waves.