thermal energy

Front

What happens to molecules as heat moves through them?

Back

They begin to move faster.

Front

At what temperature do molecules on Earth stop moving?

Back

Absolute zero.

Front

In which direction does heat always move?

Back

From hot to cold.

Front

If butter at 80°C is poured on popcorn at 60°C, what will be the final temperature of both?

Back

70°C.

Front

What is thermal energy?

Back

The energy that comes from the temperature of matter.

Front

What is absolute zero?

Back

The lowest possible temperature where molecular motion stops, defined as 0 Kelvin or -273.15°C.

Front

What is conduction?

Back

The transfer of heat through direct contact between materials.

Front

What is convection?

Back

The transfer of heat through the movement of fluids (liquids and gases).

Front

What is radiation?

Back

The transfer of heat through electromagnetic waves, such as sunlight.

Front

What is the difference between temperature and thermal energy?

Back

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