Thermal Energy Practice

Front

What is thermal energy?

Back

Thermal energy is the total energy of all the particles in an object due to their motion and position. It is related to temperature and heat.

Front

What happens to molecules when they gain thermal energy?

Back

When molecules gain thermal energy, they move faster and may spread apart, leading to an increase in temperature.

Front

What is the relationship between temperature and thermal energy?

Back

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

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) caused by differences in temperature.

Front

What is radiation?

Back

Radiation is the transfer of thermal energy through electromagnetic waves, such as heat from the sun.

Front

What is the principle of energy transfer?

Back

Energy transfers from a warmer object to a cooler object until both reach the same temperature.

Front

What is thermal equilibrium?

Back

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

Front

How does temperature affect the state of matter?

Back

Increasing temperature can change a substance from solid to liquid (melting) or from liquid to gas (evaporation).

Front

What is specific heat capacity?

Back

Specific heat capacity is the amount of heat required to raise the temperature of 1 kilogram of a substance by 1 degree Celsius.