Heat Transfer

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat moves from a hotter object to a cooler one through molecular collisions.

Front

What is convection?

Back

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

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through, allowing heat to be transferred through empty space.

Front

How does heat transfer occur between two objects?

Back

Heat transfers from an area of high temperature to an area of low temperature until thermal equilibrium is reached.

Front

What happens when you touch a hot object?

Back

When you touch a hot object, heat is transferred from the object (high temperature) to your hand (low temperature) through conduction.

Front

What is an example of convection in everyday life?

Back

An example of convection is boiling water, where hot water rises to the surface and cooler water sinks to the bottom.

Front

What is an example of conduction?

Back

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

Front

What is an example of radiation?

Back

An example of radiation is feeling the warmth of the sun on your skin, even when you are not in direct contact with it.

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.

Front

What role does temperature play in heat transfer?

Back

Temperature determines the direction of heat transfer; heat always flows from higher temperature areas to lower temperature areas.