Releasing more neutrons which split those atoms o

Info icon This preview shows pages 7–8. Sign up to view the full content.

releasing more neutrons which split those atoms o Control rods absorb excess neutrons to stop meltdown (chain reaction of neutrons splitting Uranium atoms) o Small risks of large accidents, little waste compared to coal but radioactive waste harmful, no pollution and less effects on land from mining Biofuel – definition, types, environmental/social impacts o Ethanol (fermenting biomass: carbs sugar) for gasoline engines and biodiesel (vegetable oil, cooking grease, animal fat) for diesel engines o Sustainable but drives crop prices up and in LEDCs can cause problems as crops are diverted away from food production Hydropower – how it works? Environmental impacts. Small growing room in the future o Most rivers already damned o Uses rise and fall of tides or movement or river, lake water to turn rotors and spin magnets creating electricity o Clean and renewable Solar power disadvantages o Initial investment very expensive o Alter deserts habitats through shade, growth of weeds o Eye sore on environment
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Wind power – how it works? Pros and cons. Offshore development o Wind powers turbines that generate electricity, high EROI o Offshore has more wind, and more space o Eye-sore and kills birds, wind can be intermittent, best areas can be too far away from population hubs (great plains) Geothermal energy – geothermal power plant vs. heat pump systems; pros and cons o Heated water released as steam from magma and radioactive decay brought to the surface by man, or bursts out naturally (geysers), steam turns turbines o Heat pumps use natural temperature difference between air and earth to either cool pipes water in the summer or heat water pipes during the winter that then transfer it into a house, very energy efficient, no emissions. o Only renewable if ground water has time to recharge and isn’t extracted too quickly, few areas have access to geothermal energy In the world How does hydrogen fuel cell work?
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.
  • Fall '12
  • ProfessorSmith
  • Energy, Peak oil

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern