Heat Transfer and Thermal Energy

Front

What is heat transfer?

Back

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

The transfer of heat through direct contact between materials.

Front

Define convection.

Back

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

Front

Define radiation.

Back

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

Front

What happens to particles in a substance as it heats up?

Back

They gain energy, move faster, and typically spread apart.

Front

What happens to particles in a substance as it cools down?

Back

They lose energy, slow down, and come closer together.

Front

How does solar radiation affect objects on Earth?

Back

Solar radiation heats objects, which can then transfer heat to other objects through conduction or convection.

Front

What is an example of conduction in everyday life?

Back

Placing a metal spoon in a hot pot of soup; the heat transfers from the soup to the spoon.

Front

What is an example of convection in everyday life?

Back

Boiling water; the hot water rises and cooler water moves down to take its place.