Fossil Fuels

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 4. The power to do work or make things move (6)
  2. 5. Fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period (4)
  3. 7. The remains of a plant or animal that existed in a past geological age and that has been excavated (6)
  4. 8. Substance used in or made by chemistry (8)
  5. 10. A dark oil consisting mainly of hydrocarbons (9)
  6. 12. State of matter that fills any space, like air (3)
  7. 13. From crude petroleum (8)
  8. 14. A flammable hydrocarbon oil used as fuel in lamps and heaters (8)
  9. 15. German engineer who invented the ___ engine (6)

Down

  1. 1. A substance that can be consumed to produce energy (4)
  2. 2. A fertilizer that is derived from animal or vegetable matter (7)
  3. 3. A volatile flammable mixture of hydrocarbons derived from ___ (6)
  4. 6. Capable of being ___ (9)
  5. 9. State of matter that flows like water (6)
  6. 11. Available source of wealth (8)