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 types of heat transfer?

Back

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, such as infrared radiation, without the need for a medium.

Front

How does conduction occur in solids?

Back

In solids, conduction occurs as vibrating particles collide with neighboring particles, transferring energy.

Front

What is an example of convection in everyday life?

Back

An example of convection is the warm air rising from a heater, causing cooler air to move in and create a circulation.

Front

How does radiation allow us to feel the warmth of the sun?

Back

Radiation allows us to feel the warmth of the sun because the sun emits infrared radiation that travels through space and warms our skin.

Front

What happens to air when it is heated?

Back

When air is heated, it becomes less dense and rises, leading to convection currents.

Front

What is the relationship between molecular motion and temperature?

Back

The quicker a molecule moves, the warmer it is; higher temperature means faster molecular motion.