Heat

Heat is the flow of thermal energy, which always flows from hot to cold.

Temperature is a measure of the average kinetic energy of molecules.

As a substance heats up (absorbs thermal energy) its molecules move faster and

get farther apart.

Kinetic energy increases, as molecules speed increase

Conduction- heat that is transferred by contact and collision of molecules which can

happen in solids, liquids, and gases.Metals are good conductors they can transfer

energy with contact easier than other materials.

Convection‐“heat rises”, only occurs in liquids and gases,

Radiation ‐heat that is transferred by electromagnetic radiation (infrared rays).

Q = mc∆T ---> the amount of heat that is transferred= mass * specific heat * change in temperature

Phase changes is when energy is absorbed or released (melting/freezing or boiling/condensing) The temperature does not change.

Evaporation is a cooling process (seen in the water cycle too)

Condensation is a warming process