Heat Transfer

Front

What is conduction?

Back

Conduction is the transfer of heat energy between solids through direct contact. It occurs when particles collide and transfer energy to neighboring particles.

Front

What is convection?

Back

Convection is the transfer of heat by the movement of fluids (liquids or gases). It occurs when warmer, less dense fluid rises and cooler, denser fluid sinks.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium and can occur in a vacuum.

Front

How does heat transfer occur when touching a hot object?

Back

Heat transfer occurs by conduction when you touch a hot object, as energy is transferred directly from the hot object to your skin.

Front

What happens to fluids during convection?

Back

In convection, warmer fluid rises due to being less dense, while cooler fluid sinks, creating a circulation pattern.

Front

Give an example of conduction in everyday life.

Back

An example of conduction is when a metal spoon gets hot after being placed in a pot of boiling water.

Front

Give an example of convection in everyday life.

Back

An example of convection is the way warm air rises from a heater and circulates around a room.

Front

Give an example of radiation in everyday life.

Back

An example of radiation is feeling the warmth of the sun on your skin, even when standing in the shade.

Front

What is the role of density in convection?

Back

Density plays a crucial role in convection; warmer fluids are less dense and rise, while cooler fluids are denser and sink.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state reached when two objects in contact with each other reach the same temperature, resulting in no net heat transfer.