1. SOLAR ENERGY By: Evan, Max, and Grant

2. Definition  There are two types of ways to create power from the sun. The first is CSP, concentrated solar power, is when you concentrate a large amount of light (sun) To heat something (water) and create steam. The other one is photovoltaic (PV) to work this you need a semiconductor. When the sun hits it the electrons are knocked out of there atoms and into a circuit.  Info from www.wikipedia.com

3. How it works  YouTube - solar energy This is how the photovoltaic (PV) type works YouTube - solar energy  YouTube - Energy 101: Concentrating Solar Power This is how concentrated solar power (CSP) works. YouTube - Energy 101: Concentrating Solar Power

4. Advantages  The sun will never run out so we will always have solar energy.  People that have solar panels at their houses make money because the extra energy goes to their neighbors then the government sends them money  Solar energy does not pollute at all  you do not need to do a lot of work on the solar panels you can just leave them.  Info from http://www.solarhome.org/infoadvantagesofsolarenergy.html

5. Disadvantages  Solar panels can be very expensive.  You need a large amount of space for the panels to be efficient.  The pollution and clouds block the rays that are coming to the solar panels.  It only works good in sunny states.  Info from http://www.clean-energy-ideas.com/articles/disadvantages_of_solar_energy.html

6. Where?  PV is mostly used in California, New York, and New Jersey.  CSP is used mostly in California and Nevada.  Info from ehow.com  Picture from homemadediysolar.com

7. Conclusion  We think that it is very efficient because the sun will never run out [other than at night). Also we can keep expanding our uses of it, from a lamp to a car or house.  It is not able to power all of our energy needs because you need to live in a sunny place year round. For example Michigan is not sunny for half of the year.

8. Future  In 2050 the worlds energy will become 25% solar power, right now it runs on 0.5%.  Info from cnn.com

9. BYE  Thanks for watching.