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 physical touch.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer areas of a liquid or gas rise and cooler areas sink, 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

Example of conduction in everyday life?

Back

Walking on warm sand with bare feet is an example of conduction, as heat transfers from the sand to your feet.

Front

Example of convection in everyday life?

Back

When boiling water, the warm water at the bottom rises to the top while cooler water descends, demonstrating convection.

Front

Example of radiation in everyday life?

Back

Feeling the warmth of the sun on your skin is an example of radiation, as heat travels through space.

Front

What happens to the temperature of an object when it absorbs heat?

Back

The temperature of the object increases as it absorbs heat energy.

Front

What happens to the temperature of an object when it loses heat?

Back

The temperature of the object decreases as it loses heat energy.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state reached when two objects in contact with each other reach the same temperature and no heat flows between them.