motion forces and energy ch 6 vocab

• temperature

 measure of the average kinetic energy of the particles in an substance

• thermal energy

energy  that all objects have that increases as the objects temperature increases the sum of kinetic energy and potential energy of the particles in a material

• heat

thermal energy transferred from a warmer object to a cooler object

• conduction

transfer thermal energy by direct contact occurs when energy is transferred by collisions of particles

• radiation

transfer of energy by electromagnetic waves

• convection

transfer of thermal energy by the movement of particles from one place to another in a gas or liquid

• conductor

material that transfer heat easily

• specific heat

amount of heat needed to raise the temperature of 1 kg. of a substance by 1 Celsius

• thermal pollution

increase in temperature of a natural body of water caused by adding warmer water

• heat engine

device that converts thermal energy into mechanical energy

• internal combustion engine

 \heat engine in which fuel is burned in a combustion chamber inside the engine