a change from one form of energy to another.
a group of objects that transfer energy only to each other.( ie a roller coaster )
law of conservation of energy
states that matter cannot be created or destroyed
an energy resource that can't be replaced as fast as we use it. include fossil fuels and nuclear energy.
oil, coal, and natural gas. nonrenewable
energy resources that are naturally replaced more quickly than they are used. include solar, hydro, wind, geothermal and biomass energy.
radiant energy from the sun's rays. used to heat water and create electricity.
power created by dams that use the power of water to spin turbines.
wind mills used to turn turbines to create electricity.
heat energy from inside the earth.
organic material such as wood, and animal waste. burned for energy.
the measure of the average kinetic energy in an object.
the increase in the size of a substance in response for the increase in temperature.
0 kelvin. no particle motion.
energy transferred between objects of different temperatures.
total kinetic energy of a substance and its atoms.
the direct transfer of heat by touch.
materials that transfer heat.
a material that prevents the transfer of heat.
the transfer of heat by circulation through a fluid.
the transfer of energy through electromagnetic waves.
the amount of heat required to raise the temperature of a substance by 1 degree k or c.
states of matter
solid, liquid, gas.
change of state
the change from one state of matter to another.
material that reduces the transfer of thermal energy.
a machine that transforms heat into mechanical energy / work.
internal and external combustion engines are in cars.
the increase in water temperature that is harmful to the environment. caused by power plants.