| 6096740641 | 1st Law of Thermodynamics | Energy can never be created nor destroyed, it is simply converted form one form to another. |  | 0 |
| 6096670874 | Net Energy | Total amount of useful energy available from an energy resource or energy system over its lifetime, minus the amount of energy used, automatically wasted, and unnecessarily wasted in finding, processing, concentrating, and transporting it to users | | 1 |
| 6096672578 | Petroleum (Cruel Oil) | A fossil fuel that occurs in underground deposits, composed of a liquid mixture of hydrocarbons, water, and sulfur. | | 2 |
| 6096672579 | Petrochemicals | Chemicals obtained by refining crude oil. They are used as raw material in manufacturing most industrial chemicals, fertilizers, pesticides, plastics, synthetic fibers, paints, medicines, and many other products. |  | 3 |
| 6096722211 | Natural Gas | Underground deposits of gases consisting of 50-90% by weight methane gas (CH4) and small amounts of heavier gaseous hydrocarbon compounds such as propane (C3H8) and butane (C4H10) |  | 4 |
| 6096722212 | Coal | Solid fuel formed primarily from the remains of trees, ferns, and other plant materials preserved 280 million to 360 million years ago. |  | 5 |
| 6096723784 | Nuclear Energy | Energy released when atomic nuclei undergo a nuclear reaction such as the spontaneous emission of radioactivity, nuclear fission, or nuclear fusion |  | 6 |
| 6096725267 | Nuclear Fusion | Nuclear change in which the nuclei of certain isotopes of elements with a low mass number are forced together at extremely high temperatures until they fuse to form a heavier nucleus |  | 7 |
| 6096725268 | Nuclear Fission | Nuclear change in which the nuclei of certain isotopes of elements with larger mass numbers are split apart into lighter nuclei when stuck by a neutron. |  | 8 |
| 6096727330 | Energy Efficiency | Percentage of the total energy input that does useful work and it not converted into low-quality, generally useless heat in an energy conversion system or process |  | 9 |
| 6096728520 | Passive Solar Heating System | System that, without the use of mechanical devices, captures sunlight directly |  | 10 |
| 6096732930 | Active Solar Heating System | System that uses solar collectors to capture energy from the sun and store it as heat for space heating and water heating |  | 11 |
| 6096734817 | Photovoltaic (Pv) Cells or Solar Cells | Device that converts radiant (solar) energy directly into electrical energy |  | 12 |
| 6096737046 | Hydropower / Hydroelectricity | Electrical energy produced by falling or flowing water. |  | 13 |
| 6096737047 | Wind Power | The ability to make electricity using the air flows that occur naturally in the earth's atmosphere. Wind turbine blades capture kinetic energy from the wind and turn it into mechanical energy, spinning a generator that creates electricity. |  | 14 |
| 6096739337 | Biomass Energy | Organic material that comes from plants and animals, and it is a renewable source of energy. |  | 15 |
| 6096739338 | Geothermal Energy | Heat transferred from the earth's underground concentrations of dry steam, wet steam, or hot water trapped in fractured or porous rock |  | 16 |
| 6096740640 | Hydrogen Energy | A fuel cell combines hydrogen and oxygen to produce electricity, heat, and water. Fuel cells are often compared to batteries. Both convert the energy produced by a chemical reaction into usable electric power. |  | 17 |
| 8465884293 | Fossil Fuel | A fuel derived from biological material that became fossilized millions of years ago. |  | 18 |
| 8465896068 | Nonrenewable Energy Resource | An energy source with a finite supply, primarily the fossil fuels and nuclear fuels. |  | 19 |
| 8465978758 | Turbine | A device with blades that can be turned by water, wind, steam, or exhaust gas from combustion that turns a generator in an electricity producing plant. |  | 20 |
| 8466044097 | Crude Oil | Liquid petroleum removed from the ground. |  | 21 |
| 8466057506 | Oil Sands | Slow-flowing, viscous deposits of bitumen mixed with sand, water, and clay. |  | 22 |
| 8466062470 | 2nd Law of Thermodynamics | When energy is changed from one form to another, it always goes from a more useful to a less useful form. |  | 23 |
| 8466070340 | Oil Pollution Act of 1990 | Gives the Environmental Protection Agency (EPA) the ability to respond to oil spills and to regulate oil storage facilities. | | 24 |
| 8466079332 | Radioactive Waste | Nuclear fuel that can no longer produce enough heat to be useful in a power plant but continues to emit radioactivity. |  | 25 |
| 8466103535 | Renewable Energy | An energy source that is either potentially renewable or nondepletable. | | 26 |
| 8466112798 | Biofuel | Liquid fuel created from processed or refined biomass. |  | 27 |
| 8466120845 | Biodiesel | A diesel substitute produced by extracting and chemically altering oil from plants. |  | 28 |
| 8466160753 | Fuel Cell | An electrical chemical device that converts fuel, such as hydrogen, into an electrical current. |  | 29 |
| 8892093306 | Shale Oil | Extracted from shale rock that contains a mixture of hydrocarbons called kerogen. The rocks are crushed and then heated to separate the shale oil from the rock. Majority of the world's shale oil can be found in the United States. | | 30 |
| 8892100306 | Peat Coal | Early stage of coal that is formed under minimum pressure and has high moisture content. Has a very low heat and carbon content. Used for heat and cooling. | | 31 |
| 8892100307 | Lignite Coal | Formed under more pressure, heat, and time than peat. Has a low heat and carbon content as well as a high moisture content. Used to produce electricity, but is responsible for a great deal of air pollution due to its high sulfur content. | | 32 |
| 8892102930 | Bituminous Coal | Used regularly as a fuel because of its high heat content. Also has a high sulfur content. | | 33 |
| 8892102931 | Anthracite Coal | Very valuable energy resource because it has a high heat content with very low moisture and sulfur content. Takes the longest to form over the other types of coal and is expensive. | | 34 |
| 10389918544 | Tidal Energy | Energy that comes from the movement of water driven by the gravitational pull of the Moon. |  | 35 |
