Energy Resources

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Across
  1. 3. it is a fuel that is composed primarily of methane
  2. 5. these are solid fuel used as an alternative to coal from plant and animal wastes like scraped chunks, corn husk, animal and sewage manure
  3. 7. _____ fuel has a negative net energy yield
  4. 9. hardest type of coal with high heat content and low sulfur content
  5. 10. _____ sand is a type of crude oil found in combination of sand and clay
Down
  1. 1. _____ is a type of fuel from decayed organisms living a long time ago that has a high net energy yield but are the main cause of environmental problems
  2. 2. In _____ solar heating, the interior of the building is painted with dark-colored paint and this painted interior is exposed directly under the sun
  3. 4. simultaneous production of multiple forms of energy from a single source that maximizes the energy yield
  4. 6. nuclear _____ is the process used by the sun wherein two light atoms are forced together at high temperature
  5. 8. type of fuel rod used in nuclear fission reactions