(Chapter 2) Thermal Energy Review (Amplify)

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of all the molecules in an object, which is related to its temperature.

Front

How does the number of molecules in an object affect its thermal energy?

Back

The more molecules an object has, the more thermal energy it has, because there are more particles contributing to the total kinetic energy.

Front

What is thermal equilibrium?

Back

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

Front

Why do objects with more thermal energy feel warmer?

Back

They have faster-moving molecules that transfer more kinetic energy to our skin.

Front

What occurs during a collision between two objects with different temperatures?

Back

Thermal energy is transferred from the hotter object to the cooler object.

Front

What is kinetic energy?

Back

The energy an object has due to its motion, which depends on its mass and speed.

Front

What is the relationship between temperature and thermal energy?

Back

Temperature is a measure of the average kinetic energy of the molecules in an object, while thermal energy is the total kinetic energy.

Front

What happens to thermal energy when an object is heated?

Back

The thermal energy increases as the molecules move faster and collide more frequently.

Front

What is conduction?

Back

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

Front

What is convection?

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids or gases) due to differences in density.