Please post a quiz with at least five questions about your energy resource. Be creative, you should use a mixture question types!
Choose an alternative energy resource, Explain why it is a good alternative. Be sure to include advantages and disadvantages,
Dear Sherica Jones-Lewis,
The following response was provided by one of NASA's Heliophysicists (which means a scientist who studies the Sun). Most of the energy from the Sun that reaches the Earth comes in the form of light (photons). The Sun is really bright. This light includes visible light (the stuff we can see), infrared light, and ultraviolet light. Some of that light gets absorbed by the Earth's atmosphere, some gets reflected back into space, and some gets absorbed by the ground or things on the surface of the Earth. Chlorophyll is the green chemical in plants that converts the Sun's energy to chemical energy that the plant can use. Solar cells convert the light from the Sun into electricity. The total amount of light that reaches the Earth is about 1360 Watts per square meter. That means that to power a 100 Watt light bulb would require a perfect solar array about a square foot in area. Because real solar cells are not perfect, you really need a solar array four or five times that. We hope this helps. Please let us know if you have any questions. Warm Regards, Michelle NASA Langley ASDC User Services Currently, I am writing a newsletter for each unit, collecting information using polls, and blogging with parents. Recently, I looked back at an old parent post and learned that it would be beneficial to some if I use the calendar on Blackboard, so I will begin doing so. Additionally, I am always available by email. Is there anything else that I can do to stay connected to you? Please blog with me and/or respond to this week's poll to let me know.
Thank you, Mrs.Jones-Lewis |
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