vocab
the use of force to move an object some distance
work
force x distance
work
the sum of an objects kinetic and potential energy
mechanical energy
the transfer of energy from an object with a higher temp. to an object with a lower temp
heat
the amount of energy needed to raise the temp og 1g of water by 1 C
calorie
energy
what unit is used to measure work?
joule
a type of kinetic energy, it results from the vibration of particles
sound energy
when energy changes from one form to another
energy transformation
the transfer of energy as heat through matter by direct contact is known as
conduction
the rate at which work is done
power
energy/time
power
is transmitted through space in the form of electromagnetic waves
electromagnetic energy
energy cannot be created or destroyed
law of conservation of energy
a material that transfers energy as heat well
conductor
the total kinetic energy of a substance
thermal energy
energy out/ energy in x 100%
percent efficiency
energy an object has due to the motion of it's molecules
thermal energy
the ration of useful output energy to input energy
efficiency
a material that is a poor conductor of energy as heat
insulator
energy stored in chemical bonds that hold chemical compounds
chemical energy
what is the unit of measurement for power
watt
the nucleus of an atom is the source of this energy
nuclear energy
the transfer of energy as heat by the movement of liquid or gas
convection
the transfer of energy by electromagnetic waves
radiation