Semester 1 Test 11th grade

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Across
  1. 5. The practice of reducing energy use to prevent environmental damage.
  2. 6. Extraction of a mineral by removing a strip of the layers of soil and rock on top of the mineral deposit.
  3. 8. Liquid fossil fuel made up mostly of hydrocarbons.
  4. 9. These are strongest just before or just after rain and hail begin.
  5. 13. Energy that, once it is used up, it cannot be replaced.
  6. 15. The amount of a crop produced in a given area.
  7. 16. Too many animals eating too much of the plant cover, impeding regrowth.
  8. 19. radioactive material left over from the production of energy and other processes.
  9. 20. Energy in motion.
  10. 22. energy that holds protons and neutrons together in the nucleus.
Down
  1. 1. Energy that is stored.
  2. 2. Alternating crops in a field.
  3. 3. What happens when sulfide minerals in exposed rock surfaces react with oxygen and rainwater.
  4. 4. Concentrated animal feeding operations, or factory farms.
  5. 7. The practice of digging shafts deep into the ground to find and remove a mineral.
  6. 10. A loss of more than 10 percent of productivity due to erosion, soil compaction, overgrazing or other factors.
  7. 11. The buildup of salts in upper soil horizons.
  8. 12. Shelterbelts.
  9. 14. The ability to do work and cause change.
  10. 17. Land suitable for farming.
  11. 18. The most distinctive cloud associated with the squall line, and is also the lowest band of a cloud.
  12. 21. Energy that is replaceable in a relatively short time.