1. Law of Conservation of Energy - says that energy cannot be created or destroyed, only changed from one type to another.
2. alternative energy - energy generated in ways that do not use up natural resources or harm the environment
3. nonrenewable -a resource which can NOT be replenished or takes millions of years to replace; Ex: fossil fuels
4. natural gas - fossil fuel that is an invisible gas, is composed of the hydrocarbon, methane
5. crude oil - unrefined oil as it is taken from the ground; a fossil fuel
6. fracking - nickname for hydraulic fracturing. How we get natural gas and oil by creating fractures in a rock layer by injecting large amounts of water
7. Coal is a fossil fuel made from the preserved remains of plants buried hundreds of millions of years ago
8. oil - liquid fossil fuel from ancient dead organisms used for transportation and other products
9. Natural Gas-a gaseous fuel made from the remains of ancient organisms and microscopic sea plants.
10. Shale layers of buried buried shale rock that is rich in natural gas and oil. Fracking is used to get the gas.
11. Soil-is considered nonnewable because it takes so long to be formed.
12. nuclear fission - the splitting of an atom's nucleus into smaller nuclei, it is how nuclear reactors work.
13. renewable - a resource that is replaceable in a short period of time; Ex: trees, water
14. Water-is renewable because of the water cycle. It can be polluted but still recycled.
15. hydropower - electricity derived from the energy of moving water trapped behind dams or fast moving rivers
16. geothermal energy - heat energy in Earth's interior from water or steam that has been heated by magma
17. solar energy - energy obtained from solar power
18. Wind-moving air that can be used to power windmills.
19. Biomass-wood scraps, grasses, and garbage that can be burned as energy.20. Biofuels-liquid fuels that can be made from materials such as corn, sugar cane, and cooking oil.