Unit 4: Thermal Energy (I.6C & I.6D)

Front

What is conduction?

Back

Conduction is the process of heat transfer through molecular collisions.

Front

In a closed system, if one object is at 75 C and another at 50 C, which way will heat flow?

Back

Heat will flow from the object that is 75 C to the object that is 50 C.

Front

Which mug is considered an open system: one with a lid or one without?

Back

The mug without a lid is considered the open system.

Front

If Object 1 has a thermal energy of 100 F and Object 2 has 42 F, which has lower kinetic energy?

Back

Object 2 has lower kinetic energy.

Front

What happens to the total amount of energy in a thermal power plant system?

Back

The total amount of energy remains constant.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact no longer transfer heat to each other.

Front

What is the difference between an open system and a closed system?

Back

An open system can exchange both matter and energy with its surroundings, while a closed system can only exchange energy.

Front

What is thermal energy?

Back

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

Front

What is the principle of conservation of energy?

Back

The principle states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is convection?

Back

Convection is the transfer of heat by the movement of fluids (liquids or gases) due to differences in density.