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Wind Energy

Wind isn't just some uncontrollable part of nature that messes up our hair or sucks up Dorothy, Toto and anything else in its way. It can't be trained but it can be put to work. The kinetic energy of wind can be changed into other forms of energy. When a boat uses a sail to push it, that is one form of wind energy at work. Farmers have been using wind energy for years to pump water from wells and turn large stones to grind wheat or corn - just like a water wheel.

Wind is also used to make electricity. Blowing wind spins the blades on a wind turbine - just like when you blow on a toy pinwheel. When the blades turn, the turbine is operating and electricity is generated. The turbine has a brake, so if the wind blows too hard, the brake can stop the blades from being damaged. Some wind turbines are up to 10 stories high and have blades as long as 50 feet. Wind turbines don't create any pollution but they can be pretty noisy.

Wind has to blow at speeds of 12 to 14 miles per hour to turn the turbines fast enough to create electricity. The turbines usually produce about 50 to 300 kilowatts of electricity each. Kilo means 1,000, so a kilowatt is 1,000 watts. You can light ten 100 watt light bulbs with 1,000 watts. This means a 300 kilowatt wind turbine could light up 3,000 light bulbs that are 100 watts.

Wind turbines are grouped together in what are called wind farms. About 30 percent of the world's electricity is made from wind in California. They have three large wind farms that create enough electricity to supply a city the size of San Francisco with power. Two countries that use a lot of wind energy are Denmark and Germany.

The world's largest wind machine is on the island of Oahu, Hawaii. The windmill has two blades, 400 feet long, on the top of a tower which is 20 stories high.

Do you have any windy day stories? Comment below if you do!

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"-Oracle-" wrote:"Our minds are constantly being invaded by legions of half-truths, prejudices, and false facts. One of the great needs of mankind is to be lifted above the morass of false propaganda." OMG!! awesome quote!!!!!  I'm totally writing it down :D
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-Oracle- posted in General:
"Our minds are constantly being invaded by legions of half-truths, prejudices, and false facts. One of the great needs of mankind is to be lifted above the morass of false propaganda."
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Pink_Cool_Girl posted in General:
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Hi! I'm making this so I can get commissions to draw something from someone. I love doing commissions, and I love drawing :3 If you'd like to request something, here's what I'll need to know. Note: I tend to do humans (mostly OCs for people) and fail at inanimate objects/plants/animals, but I can try XD Style: Realistic (Hardest for me) *A selection of a head shape. Like, oblong, square, oval, etc., and if you don't know all them or what they look like, look up some charts of head shapes, and pick your favorite. Or just, whatever your character has XD *A body type. Chubby, skinny, average, toned, etc. *Height, generally. I'm not good at putting a height effect in, but I can try :P *Eye shape. Good to look up a chart for this, too, and choose the one you like. Also say whether or not they're wide-spaced, close-set, or the classic one-eye-apart. Note, though, that Africans/African-Americans tend to have wide-spaced eyes. *Ethnicity. European, African/African-American, Asian, etc... it's good to know, since some ethnicities have different proportions than others. And yeah, Google doesn't think "ethnicities" is a word. I'm not sure either XD *Age. It'll make a difference in heads tall. *Gender. It'll make a difference in features. *Hair color, hair length, and a good description or image example of what it's styled like. *A good description or an image example of what the person wears. *A good description or an image example of what the pose the person is doing is. *If you prefer, it can be done in black-and-white. You don't have to include colors if you want black-and-white. That's all I can think of for that style, so if you think of anything else, please add it in! X3 You can also just use embedded images for all of the areas, if you so wish. If you desire to see my skill level before you request a drawing, I'll be posting an example of each style I do this weekend. Now... for anime/manga. *Essentially the same as realistic, but with the eyes, it's best to provide examples for the shape of the eyes. Anime/manga elements should be included, too :P That's all. If you have some other style I should try, or have some tips on how I can improve, please tell me! ^-^ I already know I need to work on clothing wrinkles for sure, so any help on that is greatly appreciated. (Eventually, over the weekend, I'll make forms for each individual style... And an example of my work in each form.) Oh! Media forms! Here's what I offer, and the time expected... Pencil and paper (Just shading): One day (1-2 commissions), 2-3 days (3-6 commissions), 3-5 days (7-10 commissions), 5+ days (11+ commissions). NOTE: ESTIMATES. Pencil and paper (In color): Same amount of time as the above. Digitally drawn (Longest): Five days (1-2 commissions), it really just depends though. Expect digital ones to take at least a week.
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