Question

Which statement best explains heating by convection?

Land and ocean absorb and re-emit heat from the sun.

Sunlight travels through space without the aid of fluids or solids.

Warm air rises and takes heat with it; eventually it cools and sinks.

Air molecules touch the warm ground, heating them up.

Answer 1

Answer:

The correct option is C) Warm air rises and takes heat with it; eventually it cools and sinks.

Explanation:

There are three main ways in which heat can be transferred:

• Conduction
• Convection
• Radiation

Convection can be described as a process of heat transfer between areas having different temperatures. For example, cold air is more denser than warm air. This is the reason why conventional currents arise due to temperature gradient.

Answer 2

Answer:

C. Warm air rises and takes heat with it; eventually it cools and sinks.

Explanation:

I took the test here is proof: