Chapter 6 8th Grade Science Thermal Energy

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance, which determines its temperature.

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 or gases) caused by differences in temperature.

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves, which can occur in a vacuum.

Front

What is combustion?

Back

Combustion is a chemical process in which a substance reacts with oxygen to produce heat and light.

Front

What is density?

Back

Density is the mass of a substance divided by its volume, often expressed in grams per cubic centimeter (g/cm³).

Front

How does temperature affect thermal energy?

Back

As temperature increases, the thermal energy of a substance also increases because the particles move faster.

Front

What is an insulator?

Back

An insulator is a material that resists the flow of heat, preventing heat transfer.

Front

What is a conductor?

Back

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

Front

What is the difference between conduction and convection?

Back

Conduction occurs through direct contact, while convection involves the movement of fluids.