Question

which of the following is an example of energy transfer by convection? light from a bright lamp warms the area around it a computer feels hot to the touch from excessive use the earths warm surface heats air which circulates upward

Explanation:

1. Analyze the first option: Light from a bright lamp warming the area around it is radiation (energy transfer via electromagnetic waves), not convection.
2. Analyze the second option: A computer feeling hot to the touch from excessive use is conduction (heat transfer through direct contact) or maybe some internal heat generation, not convection.
3. Analyze the third option: The Earth's warm surface heats air, and the heated air (a fluid) circulates upward. Convection is heat transfer through the movement of fluids (liquids or gases), so this is convection.

Answer:

The Earth's warm surface heats air which circulates upward