Renewable and Nonrenewable Resources (pgs 57-71)

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Across
  1. 3. Hydroelectric ____________ restrict the natural flow of a river controlling how much water passes through (pg69)
  2. 7. Biofuel such as ___________ created from corn or sugar cane can be made from used cooking oil (pg71)
  3. 10. hydroelectric dams disrupt the natural processes such as migration of ______________(pg69)
  4. 13. A natural resource is a anything that occurs naturally in the ___________________ that humans use. (pg57)
  5. 15. To meet the demand for natural gas a process called _______________ has become popular (pg62)
  6. 18. The ______________ of energy rich fossil fuels has made it easy for humankind to justify using petroleum, coal and natural gas ( pg67)
  7. 21. Oil is especially useful in powering engines in ____________, ships, trains, and airplanes (pg60)
  8. 23. __________ power is a nonrenewable resource that creates much of the worlds electricity (pg63)
  9. 25. What we commonly refer to as oil is ________________ known as petroleum (pg60)
  10. 26. ______________ such as wood grass and plant based materials have been burned to create heat and light for thousdands of years (pg71)
  11. 27. Burning coal-fired power plants accounts for about 30 percent of the ________________ produced in the US (pg58)
  12. 28. One of the alternative resource not coming from the sun (pg71)
Down
  1. 1. Wind __________ do best where there is a steady supply of wind (pg70)
  2. 2. Fossil fuels include coal, petroleum, and ____________ gas. (pg58)
  3. 4. Resources that we cannot run out of (pg67)
  4. 5. Like the water cycle _______ is powered by energy from sunlight. (pg70)
  5. 6. As with coal, burning oil, and natural gas emits carbon ____________. (pg60)
  6. 8. Geologists estimate that we have used how much of the total petroleum on Earth? (pg64)
  7. 9. Not all places on earth receive the same amount of sunlight _______________ the year (pg 68)
  8. 11. The suns energy drives the ____________ cycle (pg69)
  9. 12. A good example of passive solar power (pg68)
  10. 14. The mined material used for nuclear fission (pg 63)
  11. 16. ___________ is formed from the remains of plants that died long ago in and around swampy areas. (pg58)
  12. 17. Oil _______________ form when these remains become trapped underground and are subject to high pressure. (pg60)
  13. 19. The ______________ distribution of fossil fuels has lead to political problems such as war (pg64)
  14. 20. Deep below Earths surface the earths crust is ____________ (pg71)
  15. 22. Some of these resources are _____________ and renewable (pg57)
  16. 24. Though the sunlight is free the __________ of the initial investment could be high(pg68)