1. Photoelectric or Solar Energy A Solar Array in California

2. How does it generate electricity?  the photoelectric effect refers to the release of electrons from the surface of metals in response to light  this means the energy contained within the light is absorbed by electrons that are in the metal, giving the electrons energy to be emitted from the surface of the metals  the energy from the electrons is what causes the electricity

3. Common Uses of This Source The main uses of photoelectric energy are:  Solar panels  Batteries (in calculators)  Outdoor lights  Flashlights

4. Advantages  it’s environmentally friendly  can save money in the long run  can last longer than battery power  lower maintenance

5. Disadvantages  less efficient in cloudy days  can be expensive to buy and install  pollution can ruin parts in solar panels  can cause power outages if the electrons get too much light

6. Bibliography  Davis, Warren. "What is the Photoelectric Effect?." PhysLink.com - Physics and Astronomy Online Portal. PhysLink.com, n.d. Web. 13 Apr. 2012. <http://www.physlink.com/education/askexperts  "Discover Solar Energy ADVANTAGES DISADVANTAGES | PROS and CONS of Solar Energy." Solar Energy Advantages Disadvantages and Solar Power information.. N.p., n.d. Web. 16 Apr. 2012..  "Solar Energy Science Project Topics: What are Solar Panels?." Science Fair Project Topics in Solar Energy. N.p., n.d. Web. 16 Apr. 2012..  "SunEdison and Developers Diversified Realty Celebrate the Activation of National Rooftop Solar Program - Architecture – Real Estate – Construction – Home Improvement." ArchiThings.Com - Architecture – Real Estate – Construction – Home Improvement. N.p., n.d. Web. 16 Apr. 2012..  "Texas Instrument TI-108TK Basic Solar Calculator, 8 Digit Display, Dual powered, Percent, square root keys, Change sign key, 3 key memory, Blue with slide case, Size Handheld, Calculator Type Basic, Print Option Without Print Option, Display Large 8." SALE STORES sales@3056520442.com Tel 305-652-0442. N.p., n.d. Web. 16 Apr. 2012. <http://salestores.com/texinti1teac.html  WikiMedia. "Ask a Physicist Answers." Ask & Experiment. physics central, n.d. Web. 13 Apr. 2012..