Energy due to motion.

The measure of the average kinetic energy of the particles in a material.

Is the energy due to the motion of particles that make up an object.

The movement of thermal energy from a warmer object to a cooler object.

When the temperature of materials that are in contact are the same.

A collection of objects that interact in some way.

A system that does not exchange matter or energy with the environment.

A system that exchanges matter or energy with the environment.

The transfer of thermal energy by collisions between particles of matter.

The transfer of thermal energy by the movement of particles from one part of a material to another.

The increase in the size (length, area, or volume) of a substance when its temperature rises.

The transfer of thermal energy from one material to another by electromagnetic waves.

A material that does not allow heat to pass through easily. It reduces heat transfer by trapping air or blocking conduction.

A material that allows heat to pass through easily. It transfers heat quickly from one object to another.