The diagram shows an example of convection.

Question

A picture of a clear pot of boiling water on a stove. There is an arrow pointing at the flame.
Which label belongs on the arrow?

Warmer water sinks
Warmer water rises
Cooler water sinks
Cooler water rises

Answer 1

The label that belongs on the arrow pointing at the flame is:

Warmer water rises

In the process of convection, the heat from the flame warms the water at the bottom of the pot, causing it to rise. Cooler water from the top then sinks to take its place, creating a convection current.