A structure, primarily of glass, in which temperature and humidity can be controlled for the cultivation or protection of plants.
Slang. A clear plastic bubble or shell covering part of an aircraft.
2006-06-20 01:34:34
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answer #1
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answered by ice cream with chocolate 6
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The term 'greenhouse effect' originally came from the greenhouses used for gardening, but it is a misnomer since greenhouses operate differently [11] [12]. A greenhouse is built of glass; it heats up primarily because the Sun warms the ground inside it, which warms the air near the ground, and this air is prevented from rising and flowing away. The warming inside a greenhouse thus occurs by suppressing convection and turbulent mixing. This can be demonstrated by opening a small window near the roof of a greenhouse: the temperature will drop considerably. It has also been demonstrated experimentally (Wood, 1909): a "greenhouse" built of rock salt (which is transparent to IR) heats up just as one built of glass does. Greenhouses thus work primarily by preventing convection; the greenhouse effect however reduces radiation loss, not convection. It is quite common, however, to find sources (e.g. [13] [14]) that make the "greenhouse" analogy. Although the primary mechanism for warming greenhouses is the prevention of mixing with the free atmosphere, the radiative properties of the glazing can still be important to commercial growers. With the modern development of new plastic surfaces and glazings for greenhouses, this has permitted construction of greenhouses which selectively control radiation transmittance in order to better control the growing environment
2006-06-20 08:28:50
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answer #2
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answered by confused seeker... 2
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According to some research, the "greenhouse" effect was first discovered by a fellow Joseph Fourier in 1842 and studied by svante Arrhenius in 1896. The term "greenhouse" was used with this phenomenon, if you will, because, in a similar way to a greenhouse, the atmosphere warms the earth planet. I stink at explaining this, so if you want you can visit this place:
http://en.wikipedia.org/wiki/Greenhouse_effect/
2006-06-20 08:29:08
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answer #3
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answered by ☆BB☆ 7
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A greenhouse (also called a glasshouse or hothouse) is a building where plants are cultivated. A greenhouse is built of glass or plastic; it heats up because the sun's incoming electromagnetic radiation warms plants, soil, and other things inside the building. Air warmed by the heat from hot interior surfaces is retained in the building by the roof and wall.
2006-06-20 08:26:52
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answer #4
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answered by bugsie 3
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It is because it is like a greenhouse, where you grow plants. The photons are trapped inside the atmosphere of the Earth, and can't escape. So, the Earth gets warmer and warmer, just like a greenhouse.
2006-06-20 13:00:22
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answer #5
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answered by quicksilvergirl 1
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greenhouse are rooms with glass wall and a transperant green coloured roof. used as nursey to grow plants.
The effect : infra-red(IR) rays component of the sun is of low wave-length and high frequency, which cross the glass walls easily and enter the glass house, heating up everything in there. The heated objects thus generate high wave-length IR which can't cross the glass walls to go out and reflects back. thus heat remains trapped in the glass house.
same phenomenon applies for earth where the layer of CO2 (carbon dioxide) acts as a glasshouse and trap the solar heat to heat the atmosphere.
2006-06-20 08:35:05
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answer #6
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answered by Anonymous
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the earth is acting like a GREENHOUSE where the gasses stay in and the sun heats the area and it acts as a greenhouse
2006-06-20 10:03:28
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answer #7
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answered by purple_rme 2
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The gases in the air let sunlight through but then do not let it re-escape, much like a real greenhouse.
2006-06-20 08:25:42
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answer #8
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answered by Gatorz22 3
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