Question

What are convection current? Give examples.

Answer 1

Convection current:

1. Convection currents are movements of fluid caused by a temperature or density difference within a material.
2. Convection currents are only seen in gases and liquids because particles within a solid are fixed in place.
3. Warm air rising toward a house's ceiling or attic is a simple example of convection currents.
4. Warm air rises because it is less dense than cool air.
5. A convection current is something like wind.
6. Heat is emitted by the sun or reflected light, creating a temperature difference that causes the air to move.