A substance that releases energy when it burns., fuel, carbon, The burning of a fuel to produce heat and light., combustion, outcome, A device that contains a wheel with blades that rotate by the pressure of moving water, steam, or air., Turbine, generator, A device that changes the energy of motion into electrical energy., generator, device, A device that stores chemical energy that can change into electrical energy., Battery, coal, Objects made for a specific purpose., device, available, First or most important., primary, turbine, A substance formed from the remains of dead organisms over millions of years, used as a source of energy., fossil fuel, petroleum, A liquid fossil fuel that can be burned to produce energy., petroleum, battery, A solid fossil fuel that is burned to produce energy., coal, uranium, A fossil fuel gas, that is burned for energy., natural gas, nuclear fuel, An energy source made from unstable elements, such as uranium., nuclear fuel, hydropower, An unstable element used by humans as an energy source., uranium, outcome, The results of an event., outcome, available, Energy generated from the movement of water, Hydropower, Device, Energy is produced from heat beneath the Earth’s crust., Geothermal energy:, Hydropower, Something that can be used or obtained., Available, coal

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