Amplify Thermal Energy Practice Assessment

Front

What happens to the molecules in a cool countertop when hot cocoa is spilled on it?

Back

The energy of the molecules in the countertop increases.

Front

How does energy transfer between two objects that are pushed together?

Back

Energy transfers from the top object to the bottom object.

Front

Which object is hotter?

Back

The object with the highest average kinetic energy is hotter.

Front

What happens when a hot object is placed on a cooler object?

Back

The hot object will warm up the cooler object by transferring energy to it.

Front

What occurs when two cubes of different temperatures touch?

Back

The cooler cube will gain kinetic energy from the hotter cube until they reach the same temperature.

Front

Define thermal energy.

Back

Thermal energy is the total kinetic energy of the molecules in a substance.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion.

Front

Explain thermal equilibrium.

Back

Thermal equilibrium is the state reached when two objects in contact have the same temperature and no heat flows between them.

Front

What is the relationship between temperature and kinetic energy?

Back

Temperature is a measure of the average kinetic energy of the molecules in a substance.

Front

What happens to the temperature of a substance when it absorbs heat?

Back

The temperature of the substance increases.