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According to Discovery, in Jan. 2013, the top five countries for wind power were China, the United States, Germany, Spain and India. Italy, France, Canada, Brazil and Denmark rounded out the top 10. Wind power can be found almost anywhere on the globe where sustained winds regularly reach 13 miles per hour or faster.

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    • What is the difference between a solar and lunar eclipse?

      Q: What is the difference between a solar and lunar eclipse?

      A: A solar eclipse occurs when the Moon passes between the Sun and Earth so that the Moon's shadow falls on the Earth. A lunar eclipse occurs when the Earth passes between the Sun and Moon and the Sun casts the Earth's shadow on the Moon. Both events happen only when the Sun, Moon and Earth are aligned.
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    • Who named the Milky Way?

      Q: Who named the Milky Way?

      A: Early Greek astronomers named the galaxy "Via Lactea" in reference to the pale band of light formed by stars along the galactic plane. The origin of the name, which translates as "Road of Milk," has been lost to time.
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    • What do you call a person who studies space?

      Q: What do you call a person who studies space?

      A: A person who studies space is called an astronomer or astrophysicist. These types of scientists are responsible for the discovery of all of the planets, stars, asteroids and other extraterrestrial objects.
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    • What is a planetarium?

      Q: What is a planetarium?

      A: A planetarium is a facility designed to replicate the features of the universe in the night sky. Similar to a museum or science center, planetariums are developed in communities to offer education and entertainment to people curious about the field of astronomy. Visitors typically pay admission fees to enter just as they would at a theater or zoo.
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    • How did the solar system form?

      Q: How did the solar system form?

      A: The formation of the solar system began with the creation of the sun after an exploding supernova caused spherical accumulation of dust particles and gas in a huge swirling cloud called nebula. Planets and other components of the solar system formed in the flat plane of the rotating disc of dust.
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    • What are meteorites made of?

      Q: What are meteorites made of?

      A: The meteorites that land on earth can be made of stone, iron or stony iron. A few meteorites are made of volcanic glass, but scientists aren't sure that all of these meteorites are extraterrestrial in nature. They believe some of these meteorites are formed when material from an impact crater liquefies and then turns to glass as it's ejected into the atmosphere.
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    • What are the eight levels of biological classification?

      Q: What are the eight levels of biological classification?

      A: The eight levels of biological classification are domain, kingdom, phylum, class, order, family, genus and species. These levels are an important part of taxonomy, which is the science of identifying species and organizing them according to systems of classification.
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    • What is the list of motile bacteria?

      Q: What is the list of motile bacteria?

      A: Some bacteria that use flagellar movement include vibrio, spirillum, klebsiella, pseudomonas, azospirillum and salmonella. Bacteria that utilize spirochaetal movement include the borrelia, treponema, leptospira, cristispira and spirochaeta. A few examples of the gliding bacteria include achroonema, alysiella and cyanobacterium Oscillatoria. Bacteria motility falls under three categories: flagellar, spirochaetal and gliding.
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    • What is the definition of social factors?

      Q: What is the definition of social factors?

      A: Social factors are things that affect lifestyle, such as religion, wealth or family. It is important for businesses to be aware of these factors as they change because it is a very important component in proper marketing.
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    • What is the difference between anabolism and catabolism?

      Q: What is the difference between anabolism and catabolism?

      A: Anabolism is a process in which the liver creates new proteins from digested nutrients, while catabolism involves the breaking down of proteins into essential amino acids. Both are vital to the body's metabolism and maintaining healthy cell function.
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    • Is air a fluid?

      Q: Is air a fluid?

      A: Although fluid is sometimes used as an alternative word for liquid, air is treated as a fluid in the field of fluid mechanics. Objects moving through air encounter forces and experience conditions similar to objects traveling through liquids.
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    • Why were blood tests required before marriage?

      Q: Why were blood tests required before marriage?

      A: Premarital blood tests have been used to check people getting married for syphilis, rubella, HIV and sickle-cell anemia. The objective of such tests was to ensure the infected person got treated prior to infecting his or her partner or child. In the United States, premarital blood laws were enacted during the 1930s and 1940s when syphilis was considered a potential public health concern.
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    • What color does brown and yellow make?

      Q: What color does brown and yellow make?

      A: Mixing the colors brown and yellow will make what is described as a lighter and brighter shade of brown. Yellow is one of the primary colors used to make brown.
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    • What is color intensity?

      Q: What is color intensity?

      A: Color intensity refers to how bright or dull a color looks, according to Art Studio Chalkboard. This term is most often used in art and photography but can also have other applications. Bright colors are considered more pure, while dull colors can appear indistinguishable or gray.
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    • What color do green and purple make?

      Q: What color do green and purple make?

      A: Mixing green and purple paint or dye produces a dark greenish-brown color. Combining two or more colors to create a different color is called color mixing.
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    • What colors make green?

      Q: What colors make green?

      A: Green is made by mixing blue and yellow. A mixture containing more blue than yellow makes dark green, while a mixture with more yellow than blue makes lime green, and a blue-and-yellow mixture with white added makes pastel green.
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    • Which two colors make turquoise?

      Q: Which two colors make turquoise?

      A: Turquoise cannot be made exactly from two colors because it is not on the color wheel; the two most prominent colors in turquoise are blue and green. There are many different shades of turquoise, with some being more greenish and others resembling a pale blue.
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    • How many colors are there in the world?

      Q: How many colors are there in the world?

      A: There are nearly an infinite number of colors, according to the Chester F. Carlson Center for Imaging Science at the Rochester Institute of Technology. However, not all of them are distinguishable by the human eye.
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