I WONDER - What Is Fog?

Fog is formed when water is suspended in the air, reducing visibility. It is a denser version of mist, and in extreme cases, can be so thick that it obscures even close objects like one's own hands.

What causes fog to form in the air?

How does fog affect visibility?

In what way is fog different from mist?

What can happen if fog is extremely thick?

Describe a situation where fog could be a hazard.