Earth and Atmosphere

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Across
  1. 2. The hard stony remains of an animal skeleton
  2. 7. An igneous rock that cooled very quickly
  3. 9. The gas that is 78% of the atmosphere
  4. 10. The name of an igneous rock that cooled slowly in the earth
  5. 11. An energy source made from dead trees and plants
  6. 12. An igneous rock that cooled on the surface of the earth
  7. 13. The process how plants make their food
  8. 14. An energy source that is made from dead sea animals
  9. 17. The map that shows how carbon is recycled
  10. 18. Type of rock changed by heat and pressure
Down
  1. 1. The name of the process of heating up the Earth
  2. 3. The gas in the atmosphere we are most concerned about.
  3. 4. A fuel source that can be re-grown
  4. 5. Type of rock made from magma and lava
  5. 6. All living things do this in their cells
  6. 8. Type of rock made from weathered rock particles
  7. 14. A sedimentary rock made from the shells of sea animals
  8. 15. The process that all dead animals and plants undergo
  9. 16. An energy source made from plants