Question

all waves that travel through a medium are called
a surface waves.
b light waves
c mechanical waves.
d longitudinal waves.

Explanation:

To solve this, we analyze each option:

• Option a: Surface waves are a type of mechanical wave that travel along the interface of two media, not all waves through a medium.
• Option b: Light waves are electromagnetic waves and can travel through a vacuum (no medium), so they aren't defined by traveling through a medium.
• Option c: Mechanical waves are defined as waves that require a medium (solid, liquid, gas) to travel. This matches the description of "waves that travel through a medium".
• Option d: Longitudinal waves are a type of mechanical wave (like sound in air), but not all waves through a medium are longitudinal (e.g., transverse waves like water waves in a medium are also mechanical but not longitudinal).

Answer:

c. mechanical waves