Amplify Thermal Energy C2 Flashcard

Front

What happens to kinetic energy when two objects are in contact?

Back

Kinetic energy transfers from fast-moving molecules to slower-moving molecules.

Front

How do two samples at different temperatures react when they come into contact?

Back

The warmer sample will transfer energy to the cooler sample until they reach thermal equilibrium.

Front

True or False: The warmer object always transfers energy to the cooler object when they collide.

Back

True

Front

What is absolute zero?

Back

Absolute zero is the temperature at which molecules have zero molecular movement.

Front

What occurs when two objects reach thermal equilibrium?

Back

The molecules will move at about the same speed.

Front

Define thermal energy.

Back

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

Front

What is thermal equilibrium?

Back

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

Front

What is the relationship between temperature and kinetic energy?

Back

As temperature increases, the average kinetic energy of the molecules in a substance also increases.

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).