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+    Choose an interactive tour:     Click          here to tour a     geothermal power plant     Click         here to ...
Click on any element of the diagram for a further explanation+          Production             Well
+    The Production Well   The production well is a well that taps into    an underground reservoir of heated water    th...
+    Separator       The separator allows the hot water from the production well to        separate into steam or water. ...
+    Turbine and Generator       This is how the process generates electricity. The rising steam        spins a turbine, ...
+    Condenser       Here, the steam that passed through the turbine is not        condensed back into water so that it c...
+    Injection Well       From here, the water is injected back into the well to be        reheated by the hot rocks belo...
+    Geothermal Reservoir       A geothermal reservoir is an aquifer of water that is heated by        surrounding hot ro...
+    Geothermal Energy: Quiz       Test how much you know about geothermal energy! Click here        to start the quiz:
+    Question 1        In what ways can geothermal energy be used?    1.     Electrical Generation    2.     Heating Appl...
+    Wrong!       The correct answer was 4. All of the Above       Click here to continue on to the next question:
+    Correct!       Geothermal energy can be used for electrical generation,        heating, and agricultural application...
+    Question 2    Which type of geothermal field is the most common?    1.   Dry Steam Fields    2.   Wheat Fields    3. ...
+    Wrong!       The correct answer was 3. Hot Water Fields       Click here to continue to the next question:
+    Correct!       Hot water fields are the most common type of geothermal field.       Click here to continue to the n...
+    Question 3        How do geothermal energy power plants produce electricity?    1.    By harnessing natural electric...
+    Wrong!       The correct answer was 2. By harnessing geothermal heat in        the form of steam that then spins a t...
+    Correct!       Geothermal power plants produce electricity by harnessing        geothermal heat in the form of steam...
+    Question 4        The household heating and cooling system that uses         temperatures a few yards below the surf...
+    Wrong!       The correct answer was 4. Not really geothermal at all       To continue on to the next question, clic...
+    Correct!       That type of heating and cooling system, called geoexchange is        not a real form of geothermal e...
+    Question 5        What is a binary power plant?    1.    A power plant that uses conduction and a working fluid to  ...
+    Wrong!       The correct answer was 1. A power plant that uses conduction        and a working fluid to spin the tur...
+    Correct!       A binary power plant uses conduction from the hot        hydrothermal sources to heat a secondary, wo...
+    Question 6        Pumping down pressurized water to crack a rock, then filling         the crack with small beads is...
+    Wrong!       The correct answer was 4. Hydro Fracturing       To continue on to the next question, click here:
+    Correct!       Hydro fracturing is the process of pumping down pressurized        water to crack a rock, then fillin...
+    Question 7        Why is geothermal technology considered to be advanced?    1.    Geothermal technology has gone th...
+    Wrong!       The correct answer was 3. Similar technologies from the        petroleum industry have been highly deve...
+    Correct!       Advances in petroleum drilling technologies have influenced        very similar geothermal drilling t...
+    Question 8        Which of the following is NOT a con to geothermal energy?    1.    Drilling wells can be very expe...
+    Wrong!       The correct answer was 2. Geothermal power emits harmful        gases into the air       This statemen...
+    Correct!       That statement is not a con, because geothermal only releases        mildly irritating gases, if any,...
+    Question 9        Where can harnessable geothermal heat be found?    1.    In places with significant geothermal act...
+    Wrong!       The correct answer was 1. In places with significant geothermal        activity only a few miles below ...
+    Correct!       Geothermal heat is only found in places with geothermal        activity only a few miles below the su...
+    Question 10        What was the first use of geothermal energy by people?    1.    Electrical generation    2.    Ba...
+    Wrong!       The correct answer was 2. Bathing and cooking in hot springs        and geysers       To finish the qu...
+    Correct!       The first use of geothermal energy by humans was bathing in        hot springs and cooking with geyse...
+    That’s the end of the quiz       Feel free to retry it by clicking this button:       Or, go back to the homepage h...
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Interactive Presentation

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  1. 1. + Choose an interactive tour:  Click here to tour a geothermal power plant  Click here to take the Geothermal Energy Quiz!
  2. 2. Click on any element of the diagram for a further explanation+ Production Well
  3. 3. + The Production Well The production well is a well that taps into an underground reservoir of heated water that was heated by geothermal sources The hot water or steam is pumped to the surface through this well to be used in the later processes Drilling the production well is the most expensive part of building and running a geothermal plantGO BACK:
  4. 4. + Separator  The separator allows the hot water from the production well to separate into steam or water.  The steam rises into the next chamber where the turbine is, and the water is either injected back into the ground or pumped somewhere for direct heating uses, depending on the type of power plant.  The type of separator also depends on the heat of the water being pumped. If the water is pressured and superheated, then the separator is the flash chamber. However, if the water has relatively little heat and is use in a binary power plant, there is not separator at all
  5. 5. + Turbine and Generator  This is how the process generates electricity. The rising steam spins a turbine, which is hooked up to a generator. The mechanical energy that is produced by the turbine then runs the generator, which produced electricity  Usually, multiple turbines can be used, increasing the quantity of power generated  This part of the process is very similar to other electrical generation systems, like coal power plants, nuclear power plants, and natural gas power plants. However, geothermal energy does not have most of the cons like the other systems do.
  6. 6. + Condenser  Here, the steam that passed through the turbine is not condensed back into water so that it can be pumped around  This requires a large amount of cooling water, so geothermal energy usually has to be near a river  This part of the cycle also is where any leftover steam is released. This is the only thing emitted from geothermal power plants: steam. Otherwise, geothermal produces no harmful pollutants or greenhouse gases.
  7. 7. + Injection Well  From here, the water is injected back into the well to be reheated by the hot rocks below the surface  Sometimes, only water that was previously pumped from the same aquifer can be pumped back in. However, foreign sources of water can now be used in a process called hydro fracturing. For more information on hydro fracturing, see our science page on this website  The drilling of wells, again, is the most expensive part of geothermal energy
  8. 8. + Geothermal Reservoir  A geothermal reservoir is an aquifer of water that is heated by surrounding hot rocks  It is the heated water that is used for electrical generation, not the actual geothermal heat itself  Most geothermal reservoirs are a few miles below the earth’s surface, but most are also not very hot. An area with intense geothermal heat is ideal, because more power can be harnessed
  9. 9. + Geothermal Energy: Quiz  Test how much you know about geothermal energy! Click here to start the quiz:
  10. 10. + Question 1  In what ways can geothermal energy be used? 1. Electrical Generation 2. Heating Applications 3. Agricultural Applications 4. All of the above 5. Just answers 1 and 2
  11. 11. + Wrong!  The correct answer was 4. All of the Above  Click here to continue on to the next question:
  12. 12. + Correct!  Geothermal energy can be used for electrical generation, heating, and agricultural applications  Click to continue on to the next question:
  13. 13. + Question 2 Which type of geothermal field is the most common? 1. Dry Steam Fields 2. Wheat Fields 3. Hot Water Fields 4. Wet Steam Fields
  14. 14. + Wrong!  The correct answer was 3. Hot Water Fields  Click here to continue to the next question:
  15. 15. + Correct!  Hot water fields are the most common type of geothermal field.  Click here to continue to the next question:
  16. 16. + Question 3  How do geothermal energy power plants produce electricity? 1. By harnessing natural electric currents under the earths’ surface 2. By harnessing geothermal heat in the form of steam that then spins a turbine 3. By harnessing geothermal heat in the form of steam that then passes directly through a generator
  17. 17. + Wrong!  The correct answer was 2. By harnessing geothermal heat in the form of steam that then spins a turbine  To continue on to the next question, click here:
  18. 18. + Correct!  Geothermal power plants produce electricity by harnessing geothermal heat in the form of steam that then spins a turbine  To continue on to the next question, click here:
  19. 19. + Question 4  The household heating and cooling system that uses temperatures a few yards below the surface to control temperatures is… 1. One common form of geothermal energy 2. An indirect form nuclear energy 3. An old, outdated form of geothermal energy 4. Not really geothermal at all
  20. 20. + Wrong!  The correct answer was 4. Not really geothermal at all  To continue on to the next question, click here:
  21. 21. + Correct!  That type of heating and cooling system, called geoexchange is not a real form of geothermal energy, contrary to common belief  To continue on to the next question, click here:
  22. 22. + Question 5  What is a binary power plant? 1. A power plant that uses conduction and a working fluid to spin the turbine 2. A power plant that uses steam to spin the turbine 3. A power plant that exclusively specializes in binocular production 4. A power plant that flashes steam which then spins the turbine
  23. 23. + Wrong!  The correct answer was 1. A power plant that uses conduction and a working fluid to spin the turbine  To continue on to the next question, click here:
  24. 24. + Correct!  A binary power plant uses conduction from the hot hydrothermal sources to heat a secondary, working fluid, which vaporizes and spins a turbine  To continue on to the next question, click here:
  25. 25. + Question 6  Pumping down pressurized water to crack a rock, then filling the crack with small beads is a process called: 1. Fuel Fabrication 2. Hydrothermal locating 3. Water Injection 4. Hydro Fracturing
  26. 26. + Wrong!  The correct answer was 4. Hydro Fracturing  To continue on to the next question, click here:
  27. 27. + Correct!  Hydro fracturing is the process of pumping down pressurized water to crack a rock, then filling the crack with small beads  To continue on to the next question, click here:
  28. 28. + Question 7  Why is geothermal technology considered to be advanced? 1. Geothermal technology has gone through significant testing and advances 2. Aliens gave us their geothermal technologies 3. Similar technologies from the petroleum industry have been highly developed and then converted to geothermal uses 4. A great deal of people are interested in geothermal energy, so they all try to improve its technologies
  29. 29. + Wrong!  The correct answer was 3. Similar technologies from the petroleum industry have been highly developed and then converted to geothermal uses  To continue on to the next question, click here:
  30. 30. + Correct!  Advances in petroleum drilling technologies have influenced very similar geothermal drilling technologies  To continue on to the next question, click here:
  31. 31. + Question 8  Which of the following is NOT a con to geothermal energy? 1. Drilling wells can be very expensive 2. Geothermal power emits harmful gases into the air 3. A large amount of cooling water is needed 4. Geothermal power plants can be an eyesore
  32. 32. + Wrong!  The correct answer was 2. Geothermal power emits harmful gases into the air  This statement is not a con, because geothermal only releases mildly irritating gases if any, not harmful gases  To continue on to the next question, click here:
  33. 33. + Correct!  That statement is not a con, because geothermal only releases mildly irritating gases, if any, not harmful gases  To continue on to the next question, click here:
  34. 34. + Question 9  Where can harnessable geothermal heat be found? 1. In places with significant geothermal activity only a few miles below the surface 2. Only in places with a cold climate 3. In your own backyard! 4. The locations are random
  35. 35. + Wrong!  The correct answer was 1. In places with significant geothermal activity only a few miles below the surface  To continue on to the next question, click here:
  36. 36. + Correct!  Geothermal heat is only found in places with geothermal activity only a few miles below the surface  To continue on to the next question, click here:
  37. 37. + Question 10  What was the first use of geothermal energy by people? 1. Electrical generation 2. Bathing and cooking in hot springs and geysers 3. Pumped heating systems 4. No one really knows
  38. 38. + Wrong!  The correct answer was 2. Bathing and cooking in hot springs and geysers  To finish the quiz, click here:
  39. 39. + Correct!  The first use of geothermal energy by humans was bathing in hot springs and cooking with geysers  To finish the quiz, click here:
  40. 40. + That’s the end of the quiz  Feel free to retry it by clicking this button:  Or, go back to the homepage here:
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