7th Grade Unit #4 Pre Test Heat Transfer and Thermal Energy

Front

What happens to particles when heat is added?

Back

The particles vibrate more.

Front

What occurs when a cold can of soda is placed on a countertop?

Back

Some heat has been transferred from the counter to the soda.

Front

What is the relationship between temperature and kinetic energy?

Back

The higher the temperature, the higher the kinetic energy.

Front

What type of heat transfer occurs when warm air rises and cool air sinks?

Back

Convection.

Front

Is a potholder a conductor or an insulator?

Back

Insulator.

Front

What is conduction?

Back

The transfer of heat through direct contact between materials.

Front

What is convection?

Back

The transfer of heat through the movement of fluids (liquids or gases).

Front

What is radiation?

Back

The transfer of heat through electromagnetic waves.

Front

Define thermal energy.

Back

The total kinetic energy of particles in a substance.

Front

What is the effect of heat on the state of matter?

Back

Adding heat can change a solid to a liquid (melting) or a liquid to a gas (evaporation).