3-A

Solar panels turn the suns solar energy into electricity via photovoltaics.

1-22

Website

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"Solar Energy." Solar Energy. Web. 02 May 2012. <http://www.dasolar.com/solar-energy>.

3-A

Photovoltaics allow electrons on the surface of a solar panel to be knocked loose by the incoming rays of the sun.  These loose electrons create a direct current (DC) of electricity as they follow a pre-determined pathway on the solar panel.DC electricity is then either stored in batteries, sent to the grid, or converted into alternating current (AC) using an inverter for use at the location. 

4:5

3-B

Using solar energy produces no air or water pollution and no greenhouse gases, but does have some indirect impacts on the environment. For example, there are some toxic materials and chemicals, and various solvents and alcohols that are used in the manufacturing process of photovoltaic cells (PV), which convert sunlight into electricity. Small amounts of these waste materials are produced.

1- 30

4-A

In addition, large solar thermal power plants can harm desert ecosystems if not properly managed. Birds and insects can be killed if they fly into a concentrated beam of sunlight, such as that created by a "solar power tower." Some solar thermal systems use potentially hazardous fluids (to transfer heat) that require proper handling and disposal.

1:31

3-B, 5-A

In fact, the sunlight that shines on the Earth in just one hour could meet world energy demand for an entire year!

5:1

2-A

In 1954, scientists at Bell Telephone discovered that silicon (an element found in sand) created an electric charge when it was exposed to lots of sunlight. Just a few years later, silicon chips were used to help power space satellites.

5:6

7
YouTube. Dir. GlobalClimateNews. YouTube. YouTube, 23 Jan. 2012. Web. 06 May 2012. <http://www.youtube.com/watch?v=nr-grdspEWQ>.

 We are still hunter gatherers in energy.

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Hunting for non-renewable energy sources causes huge problems, like climate change, health issues and shortages.

 7 

Fossil fuels have become a source of sepeclation, and speculators want to earn money.

7

Luckily searching for oil and fossil fuels is becoming less popular because of the new trend of harvesting the sun.

7