science

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Across
  1. 4. vessel,
  2. 5. radiant energy emitted by the sun
  3. 7. mixture of gasoline and ethyl alcohol used as fuel in internal combustion engines
  4. 9. Renewable organic materials, such as wood, agricultural crops or wastes, and municipal wastes
  5. 10. a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.
  6. 12. the process of changing one form of energy to another form
  7. 13. the process of burning something such as fossil fuels
  8. 14. a place crude oil is sent to
Down
  1. 1. a liquid mixture of hydrocarbons that is present in certain rock strata and can be extracted and refined to produce fuels including gasoline, kerosene, and diesel oil; also know as oil
  2. 2. the production of electrical power through the use of the gravitational force of falling or flowing water
  3. 3. a compound of hydrogen and carbon, such as any of those that are the chief components of petroleum and natural gas.
  4. 6. the central and most important part of an object
  5. 7. is energy made by heat inside the Earth's crust
  6. 8. a nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy.
  7. 11. a chemical obtained from petroleum and natural gas containing the nuclear reactor coolant, core shroud, and the reactor core