By Logan Schwartz and Evan Lim Which one is the better pick?

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Presentation transcript:

By Logan Schwartz and Evan Lim Which one is the better pick?

Wind Energy

Wind Energy History  Wind energy has been harnessed for hundreds of years. At first wind was used to propel sail-boats. Then Persians and Europeans used wind to get water from their wells. Now wind Turbines generate electricity for homes and building.

How does a Wind-Turbine work?  Wind turbines mechanics are fairly complex. Wind rotates the blades to change wind energy into rotational energy. With multiple layers of gears to translate into more speed, the rotational energy is used to spin a generator. Then the energy is sent through power-lines.

Downside to Wind-Turbines  Flying animals can get injured by flying into the blades in motion.  The wind, pressure and density is not consistent.  Certain people think that wind-turbines are ugly and don’t support them.  Wind turbines are extremely loud.

Average Wind Force In USA The Wind Force is extremely strong in the middle of the USA though only 1% of power is made by wind turbines.

Types of solar energy  Solar panels (Solar Cells)  Thermal heating  Solar cooking  Solar Sails

Parts of a solar panel  A semi-conductor is a metal plate that does not transfer electricity very well.  A piece of transparent substance covers the semiconductor.  The two surfaces are hooked up to an electric circuit to transfer the energy.

How does a Solar Panel Work? A solar molecule will pass through the glass and strike a photon from the semiconductor. Then the photon releases a electron that is then knocked into the circuit and made into electricity. Then the other electrons take it’s place.

Solar Cooking A reflected plate is set up pointed toward the sun. When the molecules strike the reflected plate, it angles to a small plate, cooking what rests on its surface.

Comparison Solar Panels Wind Turbines  The sun is shining more than wind is blowing.  Solar panels are cheaper to make than wind turbines.  Solar panels don’t make sound while wind turbines can make a noise louder than a rock concert.  Wind turbines can power an entire town while a single solar panel can’t power an house alone.  Wind has been a reliable source for 1000’s of years.

The End

Resources  Brainpop  Google Images  Here comes the sun  Through Fire and Flame  Made by Logan Schwartz and Evan Lim Intro to Computers, 11/14/12