Energy

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Across
  1. 1. A liquid fossil fuel that can be transported easily
  2. 5. Energy released from a nuclear reaction.
  3. 6. Drilling method used to obtain oil or natural gas. Works by pumping fluid through a borehole to create fractures in rock layers.
  4. 8. Rocks that contain empty spaces that can be filled with air or water.
  5. 9. Methane that is usually located near petroleum or coal.
Down
  1. 2. Rock layers that are usually made of clay, shale, igneous, or metamorphic rocks.
  2. 3. oil obtained from the ground
  3. 4. The process of removing impurities or unwanted elements from oil.
  4. 5. the splitting of a nucleus into two smaller nuclei.
  5. 7. A type of magnet in which the magnetic field is produced by an electrical current.