24 Thermal Energy Unit Test Review

Front

What is thermal energy?

Back

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

Front

What happens to particles in a solid?

Back

The particles in a solid are closely packed together and vibrate in place, but do not move freely.

Front

What is the process of heat transfer through direct contact called?

Back

Conduction.

Front

What is convection?

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids and gases) due to differences in temperature.

Front

What is radiation?

Back

Radiation is the transfer of thermal energy through electromagnetic waves, such as sunlight.

Front

How do particles behave in a liquid?

Back

Particles in a liquid are close together but can move past one another, allowing liquids to flow.

Front

What happens to particles as they cool down?

Back

As particles cool down, they lose energy and move more slowly.

Front

What is the relationship between temperature and particle motion?

Back

As temperature increases, the motion of particles increases; as temperature decreases, particle motion decreases.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact reach the same temperature and no heat flows between them.

Front

What is an example of conduction?

Back

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