Thermal Energy Unit Review

Front

What happens to molecules of a substance as its temperature increases?

Back

The energy in the substance increases.

Tags

NGSS.MS-PS1-4

Front

Why is Top Container 2 cooler than Top Container 1 after they have been touching?

Back

Top Container 2 will be cooler than Top Container 1 because the energy transferred to it is spread out over more molecules.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is a balanced state in which a system is stable and energy will no longer transfer?

Back

Equilibrium.

Front

What happens to the energy in the ice cream when it is placed in a bowl, causing the energy in the bowl to decrease?

Back

The energy in the ice cream increases while the energy in the bowl decreases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Front

What happens to the molecules of water as its temperature decreases when put into a freezer?

Back

The energy of the molecules in the water decreases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

Define thermal energy.

Back

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

Tags

NGSS.MS-PS3-3

Front

What is the relationship between temperature and kinetic energy of molecules?

Back

As temperature increases, the average kinetic energy of the molecules increases.

Tags

NGSS.MS-PS1-4

Front

What is conduction in the context of thermal energy transfer?

Back

Conduction is the transfer of thermal energy through direct contact between materials.

Tags

NGSS.MS-PS3-3

Front

What is convection in thermal energy transfer?

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids or gases).

Tags

NGSS.MS-ESS2-6

Front

What is radiation in terms of thermal energy transfer?

Back

Radiation is the transfer of thermal energy through electromagnetic waves.