Heat transfer

Front

What is heat transfer?

Back

Heat transfer is the movement of thermal energy from one object or substance to another due to a temperature difference.

Front

What are the three main methods of heat transfer?

Back

The three main methods of heat transfer are conduction, convection, and radiation.

Front

Define conduction.

Back

Conduction is the transfer of heat through direct contact between materials.

Front

Define convection.

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Front

Define radiation.

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum.

Front

How does heat transfer occur from the sun to the earth?

Back

Heat transfer from the sun to the earth occurs through radiation.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance, which is related to its temperature.

Front

What happens to heat energy when two objects at different temperatures come into contact?

Back

Heat energy will flow from the hotter object to the cooler object until thermal equilibrium is reached.

Front

What is an example of conduction in everyday life?

Back

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

Front

What is an example of convection in everyday life?

Back

An example of convection is warm air rising and cool air sinking in a room, creating a circulation of air.