Energy transfer

Front

What is energy transfer?

Back

The process of energy moving from one object or system to another.

Front

In which direction does heat energy move?

Back

From a hotter object to a colder object.

Front

What determines the temperature of an object?

Back

The speed of the atoms in the object.

Front

What happens when ice is added to a warm drink?

Back

Energy moves from the warm drink to the ice.

Front

What is the primary source of energy on Earth?

Back

The sun.

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 or gases).

Front

What is radiation?

Back

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

Front

What is thermal equilibrium?

Back

The state in which two objects in contact reach the same temperature and no heat flows between them.

Front

What is an insulator?

Back

A material that does not conduct heat well, preventing energy transfer.