Energy

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Across
  1. 3. the process in which plants convert light into energy and release oxygen
  2. 5. a large wooden frame used to support drilling equipment for the extraction of oil
  3. 6. able to make more of something
  4. 11. a mixture of gases created by the breakdown of organic substances
  5. 12. power needed to run a machine
  6. 13. to pull out or remove
  7. 14. not allowing something to pass through
  8. 15. easily set on fire
Down
  1. 1. an accumulation of material in one place
  2. 2. not able to make more of something
  3. 4. a substance that can be burned as a source of energy
  4. 7. careful or purposeful digging to uncover something
  5. 8. slippery liquid made from petroleum used for fuel
  6. 9. artificial, not made by nature
  7. 10. liquid found inside the earth that is removed and processed to create different products such as fuels and plastics