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PPT – GREENHOUSE EFFECT PowerPoint presentation | …
An issue of major concern is the possible effect of the burning of fossil fuels and other contributers to the in the atmosphere. The action of carbon dioxide and other in trapping infrared radiation is called the . It may measurably increase the overall average temperature of the Earth, which could have disastrous consequences. Sometimes the effects of the greenhouse effect are stated in terms of the of the Earth, the overall average reflection coefficient.
A major part of the efficiency of the heating of an actual greenhouse is the trapping of the air so that the energy is not lost by . Keeping the hot air from escaping out the top is part of the practical "greenhouse effect", but it is common usage to refer to the infrared trapping as the "greenhouse effect" in atmospheric applications where the air trapping is not applicable.
The Greenhouse Effect - HyperPhysics Concepts
Those gas molecules in the Earth's atmosphere with three or more atoms are called "greenhouse gases" because they can capture outgoing infrared energy from the Earth, thereby warming the planet. The greenhouse gases include water vapor with three atoms (H2O), ozone (O3), carbon dioxide (CO2), and methane (CH4). Also, trace quantities of chloro-fluoro-carbons (CFC's) can have a disproportionately large effect.
To attempt to quantify the effects of greenhouse gases on the global temperature, climatologists use the "" of the current atmospheric content of these gases.
Effects of Blue Light on Plants - Greenhouse Product News
The greenhouse effect refers to circumstances where the short wavelengths of light from the sun pass through a medium and are absorbed, but the longer wavelengths of the re-radiation from the are unable to pass through that medium. The trapping of the long wavelength radiation leads to more heating and a higher resultant temperature. Besides the heating of an automobile by sunlight through the windshield and the namesake example of heating the greenhouse by sunlight passing through sealed, transparent windows, the greenhouse effect has been widely used to describe the trapping of excess heat by the rising concentration of in the atmosphere. The carbon dioxidestrongly absorbs infrared and does not allow as much of it to escape into space.
Remember that, in the absence of the natural greenhouseeffect, global temperatures would be too low to sustain life as we knowit.
The naturally-occurring greenhouse effect is due to the fact that anumber of gases in the atmosphere absorb infra-red radiation (heat)emitted from the Earth's surface: instead of being radiatedinto space, this heat warms the atmosphere.
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The Greenhouse Effect - Georgia State University
This declining ozone layer is linkedto climate change, because many of the man-made chemicals responsiblefor the decrease in O3 are also gases that absorb infrared(heat) radiation and so have contributed to the greenhouse effect.
IB Biology Notes - 5.2 The greenhouse effect
However, O3 itself acts as a greenhouse gas, and this is important for ozone in the layer of the atmosphere called the troposphere, and, as a pollutant, has a harmful effect on animals and plants.
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