|
|
|
» Browse Science and Environment Term Papers
Ozone
Number of Words: 1112 / Number of Pages: 5
... to eighty-five kilometers in altitude and has temperature ranges
between one hundred eighty and two hundred fifty kelvins. Finally, the
thermosphere is the final level in the atmosphere. It's range is eighty-
five to one hundred forty kilometers and also temperatures as high as four
hundred sixty kelvins.
Society has been widely addressed with the many problems that we are
having in our environment today. A major problem is that of CFCs. CFC
stands for Chlorofluorocarbons which are found in many of the aerosol spray
cans. In December of 1973, Rowland and Molina discovered that CFCs can ...
|
|
A Big Problem: Shortage Of Fish
Number of Words: 976 / Number of Pages: 4
... concern is that the equipment that is used by the fishermen to catch the scallops not only do just that, but they also pick up everything else in their path. This has an impact on all marine life, particularly species such as sponges and barndoor skate which were almost forced to extinction because fishermen can't control what is being caught in the nets. The final concern is that reopening the waters that have been closed would set a bad example, by showing those involved that political pressure will prevail.
On the other end of the spectrum, are those fishermen who rely on the profit made ...
|
|
Pulmonary Agents
Number of Words: 2323 / Number of Pages: 9
... of tetrafluoroethylene polymers encountered in military materiel (e.g., Teflon7, found in the interior of many military vehicles). The oxides of nitrogen (NOxs) are components of blast weapons or may be toxic decomposition products. Smokes, e.g., HC, contain toxic compounds that cause the same effects as phosgene does. The remainder of this chapter will deal solely with phosgene because it is the prototype of this class of agents; however, the principles of medical management of phosgene exposure also apply to casualties from compounds such as PFIB or NOxs.
HISTORY/MILITARY RELEVANCE
Phosgene ...
|
|
Acid Rain 4
Number of Words: 1614 / Number of Pages: 6
... theories as to the cause of acid rain. However, the most prevalent is the theory that electric generating plants, heating plants, and other industrial plants have been emitting an excess amount of sulfur oxides, nitrogen oxides, and volatile organic chemicals (VOC’s) into the atmosphere. Once these chemicals are in the air, they react with water to form acids and fall back to the earth as precipitation. People who believe acid rain is a natural phenomenon do so because of the fact that carbon dioxide in the air combines with water vapor and produces carbonic acid (Bolch 95).
There are sever ...
|
|
A Medical And Moral Look At Ectopic Pregnancy
Number of Words: 1474 / Number of Pages: 6
... of place”. Other things in the human body can also be considered ectopic if it sits in an abnormal position in the body. A heart beat that originates from and unusual part of the heart is an “ectopic” heart beat, and a baby that is not properly nestled in the uterine cavity is an “ectopic” pregnancy.
In an ectopic pregnancy the baby can be found in various different locations. The most common is in the end of the fallopian tube. It can also settle and embed itself onto the ovary, inside the cervix, or, rarely, in the
abdominal cavity.
The symptoms are present in the first stages of pregnancy. Mi ...
|
|
Determining The Ratio Of Circumference To Diameter Of A Circle
Number of Words: 501 / Number of Pages: 2
... I could go on to find the percentage error. The equation I
used was, error divided by the accepted ratio times 100. For example, if I took
the error of the experimental ratio for the paper towels, which was 0.12. I took
that and divided it by the accepted ratio giving me .03821651. Then I multiplied
that by 100 giving me about 3.14. Using these steps I found the percentage error
for all of the objects measured.
The next step was to graph the results. I was able to do this very
easily with spreadsheet. I typed in all of my data and the computer gave me a
nice scatter block graph. I also made a graph ...
|
|
Evolution And Creation
Number of Words: 601 / Number of Pages: 3
... that was almost identical to Darwin’s theory. Darwin’s theory was
much more developed and better known. For example Darwin pointed
out that farmers would take certain qualities from two different plants
and mix them together and it would produce the desired plant. He
believed this happened in nature also and he called it “the survival of the
fittest” or “natural selection.”
There are a lot of different creation stories and they are the same
in that since but they are all different. The creation stories start at the
beginning of the world.
The creati ...
|
|
Center Of Gravity
Number of Words: 958 / Number of Pages: 4
... a nose dive into
the ground. If the center of gravity is too far aft (back) the plane will
fall out of control.
You must limit the weight and its positioning on board the aircraft
to prevent these occurrences from happening. The engineers design an
airplane so that it has a maximum weight capacity of passengers, cargo,
fuel, and etc... The engineers design an airplane so that the center of
gravity must stay within certain limits. Any weight added to an airplane
may change the center of gravity, but if the weight you put on board is
within the plane's maximum weight capacity and within the center of g ...
|
|
Electrolytes
Number of Words: 612 / Number of Pages: 3
... Dissociation of Ionic Compounds is where particles are
ionically (electrically) bonded together. They already made out of cations
and anions, but in their solid state the ions are locked into position in
their crystal structure, and can’t move around. When the ionic compound is
dissolved into water the water molecules, which are polar,(having a
positive and a negative end) will be attracted to the positive ions. This
attraction of different charges will create tension in the crystal and it
will overcome the attice (the arrangement of molecules in a crystalline
solid) energy keeping the crystal ...
|
|
Supernova
Number of Words: 696 / Number of Pages: 3
... the Crab nebula supernova,
the stellar remnant left behind after the explosion is a NEUTRON STAR--a
star only a few kilometers in diameter having an enormously large density
and consisting mainly of neutrons--or a PULSAR, a pulsating neutron star.
There are two common types of supernovas, called type I and type II.
Type I occurs among old stars of small mass, whereas type II occurs among
very young stars of large mass. It is not known how a small-mass star can
release the very large amounts of energy needed to explain type I
supernovas. Scientists generally believe that this must involve binary ...
|
|
|
