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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 types of equipment do astronomers use?

      Q: What types of equipment do astronomers use?

      A: According to NASA, modern astronomers’ tools include advanced telescopes capable of studying light reflected from the sun, moon, planets, comets and stars. Radio telescopes are utilized in the study of radio waves, while space-borne gamma ray telescopes aid in the study of gamma rays.
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    • What does the full moon symbolize?

      Q: What does the full moon symbolize?

      A: The full moon is said to symbolize different things in various cultures, including the control of water as well as the rhythm of time. The phases of the moon are also used to represent phases of life.
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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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    • What causes day and night to happen?

      Q: What causes day and night to happen?

      A: The Earth goes through a constant cycle of day and night because it rotates on an axis. At any point in time, only about half of the Earth is facing the sun, while the other side is facing away from it. The side that is facing the sun is illuminated (day) while the side facing away from the sun remains dark (night).
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    • What is a constellation?

      Q: What is a constellation?

      A: The general English definition of constellation is a group or configuration of objects, characteristics, ideas, feelings, etc, as in "a constellation of qualities." The noun constellation is used in astronomy, astrology and general English.
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    • How many satellites does Jupiter have?

      Q: How many satellites does Jupiter have?

      A: In 2011, most experts came to agree that Jupiter has a total of 67 satellites. Its four largest moons are known as the Galilean satellites: Europa, lo, Callisto and Ganymede. Around 50 of its satellites are less than 6.2 miles in diameter.
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    • What is an example of a saprophyte?

      Q: What is an example of a saprophyte?

      A: Some examples of saprophytes are the bacteria which subsist on human waste, the ink cap mushroom and non-photosynthetic plants, such as Indian pipe and gnome plant. Saprophyte is somewhat of an outdated name: fungi once termed saprophytes are now called saprobes, and plants once termed saprophytes are now called mycotrophic.
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    • What is the difference between fungus and bacteria?

      Q: What is the difference between fungus and bacteria?

      A: Fungi are multicellular, eukaryotic organisms, while bacteria are single-celled prokaryotes. The cells of fungi have nuclei that contain the chromosomes and other organelles, such as mitochondria and ribosomes. Bacteria are much smaller than fungi, do not have nuclei or other organelles and cannot reproduce sexually.
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    • Why do animals need water?

      Q: Why do animals need water?

      A: Animals need water in order for their bodies and brains to function properly because without water they will become dehydrated, malnourished and will ultimately not survive. Most animals actually gain the majority of their water from the food they eat, rather than consuming water by itself.
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    • Why do cells need energy?

      Q: Why do cells need energy?

      A: All living cells need to perform a variety of activities, and these activities require energy. Reproduction, in particular, takes a significant amount of energy. Cells that are starved of energy sources eventually die.
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    • What is a biotic environment?

      Q: What is a biotic environment?

      A: Biotic environments consist of all living things in an ecosystem. All of the plants, animals, fungi and microbes in an environment are said to be its biotic component. The biotic component is distinguished from the abiotic, or nonliving, component, which is mainly comprised of the mineral, chemical and energetic components of the environment such as water, sunlight and soil.
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    • What does the retina do?

      Q: What does the retina do?

      A: Healthline says the purpose of the retina is to collect light focused from the lens. The retina transduces the light into neural signals and transmits those signals to the brain. The retina sends light information, such as that related to color and light intensity, to the brain via the optic nerve.
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    • Is citric acid soluble in water?

      Q: Is citric acid soluble in water?

      A: Citric acid is soluble in water to a great degree. In water of a temperature of 212 degrees Fahrenheit, 84 percent of the citric acid added to the solution is dissolved.
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    • How is cooking related to chemistry?

      Q: How is cooking related to chemistry?

      A: Cooking is related to chemistry because the preparation of many types of foods involves chemical reactions. When cooks understand how chemical processes work during cooking, they are able to make adjustments and produce better foods.
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    • What are some examples of acids?

      Q: What are some examples of acids?

      A: Examples of acids include vinegar, citrus fruits, tomato juice, black coffee, bananas, milk, sulfuric acid, battery acid and hydrochloric acid, which is a digestive compound found in the stomach. Acids are ionic compounds made up of positively and negatively charged ions that separate in water to form hydrogen ions.
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    • What are natural plastics?

      Q: What are natural plastics?

      A: According to the New York Times, natural plastics, or bioplastics, are environmentally safe alternatives to conventional plastic. They are made from plant materials, such as vegetable fats or starches. Because starch is composed of polymers like petroleum, the base of conventional plastic, it serves as a viable substitute.
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    • What are some examples of erosion?

      Q: What are some examples of erosion?

      A: Examples of erosion include water erosion, wind erosion and ice erosion. These different types of erosion slowly wear down land structures over long periods of time. One of the most famous examples of a landmark created by erosion is the Grand Canyon.
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    • What is the difference between hard and soft water?

      Q: What is the difference between hard and soft water?

      A: Chemically, the difference between the two is that hard water contains calcium and magnesium ions, while soft water does not. Soft water is easier to lather with than hard water is.
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    • What colors make purple?

      Q: What colors make purple?

      A: Purple can be made by combining the primary colors red and blue. It is known as a cool color and can represent many things when used in color theory.
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    • What color does green and yellow make?

      Q: What color does green and yellow make?

      A: When mixed together, green and yellow combine to create a color called yellow-green, according to Color Matters. The color result can also be manipulated by adding varying amounts of the two colors. For example, if more green is used, the color created would be more green-yellow than yellow-green.
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    • What colors make burgundy?

      Q: What colors make burgundy?

      A: Burgundy, a deep reddish brown color named for Burgundy wine, is a mix of red, brown and a little bit of blue. The purple undertone of burgundy is created by the interaction between the red and the blue. Mixing any primary color with its complementary color creates brown.
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    • What is a split-complementary color scheme?

      Q: What is a split-complementary color scheme?

      A: A split-complementary color scheme combines one base color with the two colors directly adjacent to its opposite or complementary color and not with the complementary color itself. The purpose of this is to achieve a strong visual contrast with less tension than the standard complementary color scheme.
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    • What are primary colors?

      Q: What are primary colors?

      A: The colors that never result from combining two other colors are the primary colors of pigment, while the colors that produce white light when combined are the primary colors of light. Each of these categories includes three primary colors.
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    • What does the color mauve look like?

      Q: What does the color mauve look like?

      A: Mauve is a pale bluish purple. Compared to a pale magenta, mauve is a more grey and more blue color. It is often described as a pale violet.
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