Thermal Energy 7th Grade Science

Front

What is an insulator?

Back

An insulator is a material that slows the transfer of heat.

Front

What happens to the kinetic energy of molecules when heat is added to a substance?

Back

The molecules spread out and move faster.

Front

In which direction does heat transfer?

Back

Heat always transfers from hot to cold.

Front

What occurs to the molecular kinetic energy of an ice cube as it warms and melts?

Back

The molecular kinetic energy is increasing.

Front

What is the transfer of energy by electromagnetic waves called?

Back

Radiation.

Front

What is thermal energy?

Back

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

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).

Front

What is the difference between temperature and thermal energy?

Back

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

Front

What is the role of a conductor?

Back

A conductor is a material that allows heat to transfer easily.