Across
- 4. Consist of the gas methane mixed in with other amounts of gases. (17.2)
- 5. Energy An energy resource that cannot be replaced in a relatively short amount of time. (17.1)
- 6. An energy source that is readily available or that can be replaced in a relatively short amount of time. (17.1)
- 7. Or oil, is a dark, liquid fossil fuel made up mostly of hydrocarbons. (17.2)
- 11. Energy made available by the flow of an electric charge. (17.1)
- 12. Energy that an object has because of its position or shape – Energy that is stored. (17.1)
- 16. The energy that holds protons and neutrons together in the nucleus of the atom. (17.4)
- 17. The practice of digging shafts deep into the ground to find and remove a mineral. (17.2)
- 18. A carbon-containing fuel formed over millions of years from the remains of living things. (17.2)
- 19. The process in which fuels burns because it combines rapidly with oxygen. (17.1)
Down
- 1. The extraction of a mineral by removing a strip of layer of soil and rock on top of the mineral deposit. (17.2)
- 2. Generates electricity by controlled fission reactions in power plants. (17.4)
- 3. Radioactive material left over from production of energy and other processes. (17.4)
- 8. An expression of how much of the energy put into a system does useful work. (17.1)
- 9. Conditions in which the fuel rods produce so much heat that they melt. (17.4)
- 10. Energy that an object has due to motion – Energy in action. (17.1)
- 13. The practice of reducing energy use to prolong the supply of fossil fuels. (17.3)
- 14. the splitting of the atom that creates the reaction that drives the release of nuclear energy in power plants. (17.3)
- 15. to do work or cause a change. (17.1)