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» Browse Science and Environment Term Papers
Gravity
Number of Words: 1275 / Number of Pages: 5
... object depends on the speed, size, shape, and density of the object. The larger the surface area of the object, the greater the amount of air resistance on it. This is why feathers, leaves, and sheets of paper fall more slowly than pennies, acorns, and crumpled balls of paper.
There is another legend that states that when Newton was lying against a tree in an orchard, he was struck on the head by an apple. He wondered what provided the acceleration for the apple to fall to the ground. Was this a force of the earth on the apple? If so, then the apple must exert a force on the earth according to Newto ...
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Millennium Bug
Number of Words: 692 / Number of Pages: 3
... has identified the ultrasound machines and central monitors which have exhibited year 2000 failures. There could be significant threats to personal safety, for example if an ultrasound wrongly calculated the size of a faetus or administered radiation therapy incorrectly. Also people with heart pace makers could face the possibility of them failing.
Bank accounts could be wiped off the records and ATM's could swallow cards thought to be expired. Computers controlling home loans could strip banks off millions of dollars by resetting mortgage repayment programs back to 1900. Millions of dollars are bein ...
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Global Warming And The Greenhouse Effect
Number of Words: 1903 / Number of Pages: 7
... dioxide have increased by 30%, concentrations of methane have doubled, and nitrous oxide has risen by 15%. The increases of these chemicals have enhanced the heat trapping capability of the atmosphere of the earth. Sulfate aerosols, cool the atmosphere because they reflect light back into space, but sulfates do not live long in the atmosphere.
Scientists still do not know what exactly is heating up the earth. Some say the earth is going through a natural cycle because the earth has gone through cold periods as well as hot periods. Mounting evidence is saying that humans are to blame for the r ...
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Time To Change
Number of Words: 747 / Number of Pages: 3
... to our knowledge.
We are conscious of many more, and there are probably others that we are not
aware of. If we do not start taking them seriously soon it will be too late,
if it is not already. We need to reevaluate our priorities and plan for the
future existence of this world.
A group labeled the Earth-Firsters' often attempt to accomplish this task
through drastic and sometimes dangerous methods. As Joni Seager states ( The
Eco-Fringe: Deep Ecology, Pg. 636), "In Australia, Earth-First protesters
buried themselves up to their necks in the sand in the middle of logging roads
to stop lumbering ...
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Facts About Orthoptera
Number of Words: 1184 / Number of Pages: 5
... places around hot
water pipes. They stay hidden when they are not eating.
Eat
Crickets will eat holes in paper or in garments especially those soiled
with persperation. They also eat young roots and seedlings, peanuts, garden
crops, grain, clothing, and sometimes other insects and even each other.
Grasshoppers are a different story. They eat crops and destroy millions of
dollars a year in them. Cockroaches are just a pest and they eat almost any
thing. Cockroaches feed on a great variety of foods, meats, cheeses, sweets,
and starches(like the starch in clothing or in the glue like that in ...
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Acid Rain And Its Effects
Number of Words: 588 / Number of Pages: 3
... them susceptible to acid rain because of their limited ability to neutralize acidic compounds. This results in many lakes and streams being completely dead of fish and all other living things.
Acid rain also greatly contributes to forest degradation, even more so to high-elevated trees, it also impairs the tree growth. Acid rain effects forest soil. As acid moves through soils, it strips away vital plant nutrients through chemical reaction, resulting in a threat to future forest productivity.
Acid rain is also capable of eroding metals, including iron (the most important structural metal) stone and ...
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The History Of Carbon
Number of Words: 1117 / Number of Pages: 5
... It occurs as a mineral in nature, but it
can be made artificially from amorphous carbon. One of the main uses for
graphite is for its lubricating qualities. Another is for the "lead" in pencils.
Graphite is used as a heat resistant material and an electricity conductor. It
is also used in nuclear reactors as a lubricator (Kinoshita 119-127).
Amorphous carbon is a deep black powder that occurs in nature as a component of
coal. It may be obtained artificially from almost any organic substance by
heating the substance to very high temperatures without air. Using this method,
coke is produced fr ...
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Dementia
Number of Words: 4290 / Number of Pages: 16
... impairments begin to surface. In the moderate stage, language deficits such as aphasia and apraxia become prominent. Dysfluency, paraphasias, and bizzare word combinations are common midstage speech defects. In the severe stage the patient is gradually reduced to a vegetative state. Speech becomes nonfluent, repetitive, and largely non-communicative. Auditory comprehension is exceedingly limited, with many patients displaying partial or complete mutism. Late in the course of the disease many neuropsychological functions can no longer be measured. Also primitive reflexes such as grasp and suck e ...
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The Chaos Theory
Number of Words: 2353 / Number of Pages: 9
... galactic clustering of stars."
(Gleick, 1987)
The man most responsible for coming up with the Chaos Theory was
Mitchell Feigenbaum, who was one of a handful of scientists at Los Alamos, New
Mexico when he first started thinking about Chaos. Feigenbaum was a little
known scientist from New York, with only one published work to his name. He
was working on nothing very important, like quasi periodicity, in which he and
only he had 26 hour days instead of the usual 24. He gave that up because he
could not bear to wake up to setting sun, which happened periodically. He
spent most of time wat ...
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Hydroponics Growing Without Soil
Number of Words: 2420 / Number of Pages: 9
... production inconsistent.
How is the quality of the food today affected by the methods of Hydroponics of today?
Body
The growing media that is used for gardening greatly effects the production of the plants. If sand is used as a medium it should be tested thoroughly for any residue that might cause infected growing medium. The sand should be cleaned at least every three of four weeks. Leaching is also a major step, it is to be done at the end of each crop cycle ( Jones 69-70). Sand that is used for the medium should have sawdust mixed with it to allow for be ...
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