Energy, Power, and Work

Law of Conservation of Energy

the law that states that energy cannot be created or destroyed but can be changed from one form to another

potential energy

stored energy that results from the position or shape of an object

kinetic energy

the energy an object has due to its motion

chemical energy

potential energy stored in chemical bonds

mechanical energy

the energy associated with the motion and position of everyday objects

radiant energy

energy carried by an electromagnetic wave (light)

thermal energy

The total energy of motion in the particles of a substance (heat)

gravitational potential energy

potential energy that depends on the height of an object

sound energy

energy caused by an object's vibrations

nuclear energy

energy stored in the nucleus of an atom

PE = mgh (mass x gravity x height)

What is the formula for potential energy?

KE = 1/2 mv^2 (1/2 mass x velocity squared)

What is the formula for kinetic energy?

elastic energy

the potential energy of an object that is stretched or compressed

energy

the ability to do work or cause change

energy transfer

movement of energy from one place or object to another

energy transformation

a change from one form of energy to another

conduction

the direct transfer of heat from one substance to another substance that it is touching

convection

the transfer of thermal energy by the circulation or movement of a liquid or gas

radiation

the transfer of energy by electromagnetic waves

power

the rate at which work is done

work

force exerted on an object that causes it to move