Thermal Energy Review

Front

When things get colder, their molecules are moving ________.

Back

slower

Front

What happens to the speed of molecules in hot water compared to cold water?

Back

Molecules in hot water move faster than those in cold water.

Front

When two samples come in contact, energy will flow from ________ to ________.

Back

from the warmer one to the cooler one.

Front

Which claim is correct regarding molecular speed and energy transfer?

Back

Claim 2: Molecules speed up when they get energy from other molecules and slow down when they give energy to other molecules.

Front

What is the BEST definition of 'temperature'?

Back

A measure of the average speed of the molecules of a substance.

Front

What is thermal energy?

Back

The total energy of all the molecules in a substance.

Front

How does thermal energy relate to temperature?

Back

Temperature measures the average kinetic energy of molecules, while thermal energy is the total kinetic energy.

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 and gases).

Front

What is radiation?

Back

The transfer of heat through electromagnetic waves.