CA4 Review Thermal Energy

Front

Heat always moves from _____________ to ______________.

Back

hot; cold

Front

If the temperature of a rock is absolute zero, what would happen to the molecules?

Back

they would not be moving at all

Front

In which method of thermal energy transfer do particles vibrate in place?

Back

Conduction

Front

Why does the transfer of energy between two colliding things stop?

Back

Molecules stop transferring energy when colliding systems reach equilibrium.

Front

Croc 1 and Croc 2 are made up of the same types and number of molecules. If Croc 1 has more thermal energy, how does the speed of the molecules in Croc 1 compare to Croc 2?

Back

Croc 1's molecules move faster.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of all the particles in an object.

Front

What is conduction?

Back

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

Front

What is convection?

Back

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

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves.

Front

What happens to the thermal energy of a substance when it is heated?

Back

The thermal energy increases, causing the particles to move faster.