Heat Transfer

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when two objects at different temperatures touch each other, allowing heat to flow from the hotter object to the cooler one.

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 areas of a fluid rise and cooler, denser 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, such as the heat from the sun.

Front

What is the direction of heat flow?

Back

In heat transfer, heat always flows from a hotter substance to a colder substance.

Front

What is an example of conduction?

Back

An example of conduction is when you stir a bowl of hot soup with a metal spoon, and the spoon becomes warm due to direct contact with the hot soup.

Front

What is an example of convection?

Back

An example of convection is the circulation of air in the atmosphere, where warm air rises and cool air sinks, creating wind patterns.

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 happens to air when it is heated?

Back

When air is heated, it becomes less dense and rises, causing cooler air to move in and take its place.

Front

What is thermal equilibrium?

Back

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

Front

What is specific heat capacity?

Back

Specific heat capacity is the amount of heat energy required to raise the temperature of a unit mass of a substance by one degree Celsius.