Heat and Energy Transfer

Front

What is heat?

Back

Heat is a form of energy that is transferred between objects due to a temperature difference.

Front

What is temperature?

Back

Temperature is a measure of how hot or cold something is, indicating the average kinetic energy of the particles in a substance.

Front

What happens to molecules when they are heated?

Back

Molecules move faster and spread apart as they gain energy.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids and gases) caused by differences in temperature.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as sunlight.

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.

Front

How does heat transfer occur when touching a hot object?

Back

Heat transfers from the hotter object (stove) to the cooler object (hand).

Front

What is the relationship between mass and temperature?

Back

As mass increases, the temperature of a substance can decrease if heat is not added.

Front

What is thermal equilibrium?

Back

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