global warming 250 words in length

Anonymous
timer Asked: Jun 25th, 2014
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Question Description

  1. How does human activity impact greenhouse gases found in the atmosphere?
  2. What are some simple changes humans can do to help keep the Earth cooler in the future?

Tutor Answer

MartK
School: Carnegie Mellon University

If it were not for greenhouse gases trapping heat in the atmosphere, the Earth would be a very cold place. Greenhouse gases keep the Earth warm through a process called the greenhouse effect. The Earth gets energy from the sun in the form of sunlight. The Earth's surface absorbs some of this energy and heats up. That's why the surface of a road can feel hot even after the sun has gone down—because it has absorbed a lot of energy from the sun. The Earth cools down by giving off a different form of energy, called infrared radiation. But before all this radiation can escape to outer space, greenhouse gases in the atmosphere absorb some of it, which makes the atmosphere warmer. As the atmosphere gets warmer, it makes the Earth's surface warmer, too.

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 carbon dioxide in the atmosphere.

Taking the step of not using non-fuel based products that emit carbon dioxide is the way forward to dealing with this menace. Making the decision to be part of the control of carbon dioxide in the atmosphere is a step towards preserving the earth for future generation through planting trees that absorb carbon dioxide and emit oxygen


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Anonymous
awesome work thanks

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