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- This file is copyright of Jens Schriver (c)
- It originates from the Evil House of Cheat
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- Essay Name : 980.txt
- Uploader : Caleb Tucker
- Email Address : calebt@goeocities.com
- Language : English
- Subject : Environmental Awareness
- Title : Greenhouse Effect
- Grade : 95/A
- School System : High School
- Country : USA
- Author Comments : none
- Teacher Comments : very good report
- Date : 9-12-96
- Site found at : Friend told me about it
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- The Greenhouse Effect
-
- The greenhouse effect occurs when gases such as methane, carbon dioxide,
- nitrogen oxide and CFCs trap heat in the atmosphere by acting as a pane of
- glass in a car. │The glass▓ lets the sun light in to make heat but when the
- heat tries to get out the gases absorb the heat. Holding this heat in causes
- heat waves, droughts and climate changes which could alter our way of
- living.
- The main gases that cause the greenhouse effect are water vapor, carbon
- dioxide (CO2), and methane which comes mainly from animal manure.
- Other gases like nitrogen oxide and man made gases called
- chloroflurocarbons get caught in the atmosphere as well. The decay of
- animals and respiration are two main but natural sources of carbon dioxide.
- In my opinion we people of the whole world should try and slow down the
- emmission of greenhouse gases and/or find ways to balance the gases so the
- climate doesn't change so rapidly. If it did we would be forced to adapt to
- the new climate that we brought upon our selves. If we had a international
- cooperation to put a damper on the production of chloroflurocarbons and
- slowed down the use of fossil fuels it would dramatically slow down the
- process of "global warming."
- Over the last 100 years the global temperatures have been increasing slowly
- but steadily. Since 1980 the temperature has risen 0.2 degrees C (0.4 degrees F
- ) each decade. Scientists predict that if we continue putting the same
- amount of gas into the atmosphere by the year 2030 the temperature will be
- rising as much as 0.5 degrees C (0.9 degrees F ) or more per decade. Over all
- the global temperature could rise anywhere from 5 to 9 degrees over the
- next fifty years.
- If the temperatures do rise as predicted several things could happen. The
- increases of temperature could alter the growth of crops in areas near the
- equator due to insufficient rain and heat. This could really hurt countries
- that rely on imported food. With the high temperatures the polar ice caps
- could melt and cause the sea water level to go up 1 to 3 feet. This increase
- could take out small islands, coastal cities and some shallow rivers. The
- Everglades in Florida would be almost if not totally wiped right off the map.
- The Everglades is the home for many animals and plant life. If it did get
- flooded, they would all have to move northward across very dry land
- which they will not be able to endure for very long. When the hot
- temperatures do spread southward and northward, tropical disease will
- spread with it. Disease that were down in Mexico will maybe occur in The
- Carolinas or eventually Vermont. These new diseases will be hard to deal
- with causing many more deaths and illnesses than before. The financial
- problem with this is, that the flooding will cause dams to be built and cities
- to be reconstructed. The shortage of food will cause the price of the food to
- go up and with all the diseases we will need more medical supplies and
- workers. All of this combined could and will cost a lot of money if we don't
- do something about it now.
- The computer models can╣t predict exactly what the climate is going to be in
- the future, but they can come close to what it will be like down the road.
- Scientists proved this by predicting with computers what the climate was in
- the past. Then by looking back in records, they found that the predictions
- were close to being right.
- The "Topex" (Topographic Experiment) satellite has been collecting
- information on the changes of the sea level, and temperatures across the
- globe and the amount of gases emitted into the atmosphere. Each day the
- satellite makes 500,000 measurements, each at a different place on the earth.
- Measurements are all made between 66 degrees north and south latitudes.1
- The Cretaceous occurred over 100 million years ago. It was the warmest
- period we have knowledge of yet. There was so much carbon dioxide in the
- air that the oceans rose many meters. North America was flooded and split
- apart into two pieces. The temperature then was more than fifteen degrees
- greater than the average temperature today.
- Scientists believe that the tilt of the earth's axis changes to tilt the opposite
- way every 10,000 years like a cycle. While going through this cycle it will
- change the climate of areas. Right now it is moving so that North America
- is going to be close to the sun in the winter. Seasons become more extreme
- when the opposite happens. This controls the cycle of ice ages. Volcanoes
- when they erupt, send clouds of dust into the air blocking sunlight. This
- would cool the earth off more. Oceans are known to absorb CO2 because of
- the ocean currents and the action of plankton. There is some evidence that
- there is naturally rapid climate change between each Ice Age, which
- confuses the whole global warming and idea.
- I think every human being should take part in the fight to stop global
- warming. The government is the key to this and they better do something
- soon or it will be too late. First, the American government should sponsor
- a meeting between the nations of this world. They should establish a
- committee for handling the money, politics, and scientific research in order
- to help cut back the emission of gases into the atmosphere. Every country
- will contribute by donating money. Each country would be required to give
- 0.01 of their GNP to this committee. If they refuse they will be boycotted and
- nothing will be sold to them by the participating countries.
- Global warming is a big threat to our nation and the world. If we do not act
- now, it may be too late. Of course, there is no sure way of telling if there
- actually is a greenhouse effect, but let╣s not take any chances. Look at what is
- happening to this world, and you will see that there is a pollution problem.
- There are steps being taken at this moment to reduce the gases put into the
- air but it still isn't enough. We need to cut back more by taking a few easy
- steps. Plant a tree, or take a bus to work instead of driving your own car.
- Those things may not seem like a lot, but if more and more people do it, it
- will make a difference.
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