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» Browse Science and Environment Term Papers
How Mountains Are Formed
Number of Words: 372 / Number of Pages: 2
... currents of magma or molten rock may well up and crack the weakened
crust above. As the crust cracks, blocks of rock rise or fall forming
Fault-block mountains. Examples of these mountains are the Sierra Nevada in
California and the Grand Tetons in Wyoming. Dome mountains are formed
by the same kind of molten rock that forms Volcanic mountains. As magma
comes up in a crack in the Earth’s crust, it does not come to the surface, but
the molten rock pushes the ground up into a dome. Examples are Yosemite’s
Half Dome, the Adirondacks in New York, and the Black Hills in South
Dakota. ...
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The Element Cesium
Number of Words: 452 / Number of Pages: 2
... a vigorous reaction. Because Cesium reacts so violently with organic compounds, it is considered the most reactive of Alkali metals. There are four principle compounds that make up Cesium’s structure: Cesium Chloride, Cesium Fluoride, Cesium Carbonate, and Cesium Sulfate. The most important compound is Chloride, which is used as a constituent of getter mixtures of vacuum tubes. Cesium is identified qualitatively by it’s blue flame. When determining quantitative amount of Cesium, the fact that Cesium forms an extremely insoluble alum is a major factor.
Cesium is not very abundant on in the earth’s ...
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Ebola 3
Number of Words: 608 / Number of Pages: 3
... diarrhea, limited kidney function, internal and external bleeding, you bleed from every opening on your body, blood fails to clot, so if you get cut in any way your body will never stop bleeding from that wound. Ebola could spread and infect everyone in the world in 48 hours.
Marburg, Germany
In this small German town people were taking tests on African monkeys. These monkeys were infected with the infamous Ebola virus. What's horrifying about Ebola is that the virus can change easily, as it did with this newest strand, Marburg. Now, the original Ebola is known as Ebola-Zaire. Marburg is not as bad ...
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Diabetes 3
Number of Words: 769 / Number of Pages: 3
... Mellitus. Many changes that take place during pregnancy make controlling blood sugar more difficult for a woman who has diabetes. Changes in the levels and types of hormones produced during pregnancy can cause insulin resistance, increasing the body’s requirements for insulin. Poorly controlled diabetes may endanger the fetus as well as the woman. With proper adjustments in insulin the risks lessen. Diabetes increases a pregnant woman’s risk of infection, early labor, and high blood pressure caused by pregnancy. The baby of a diabetic woman may be unusually large at birth. The risk of birth def ...
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History Of The Aircraft Propeller
Number of Words: 1521 / Number of Pages: 6
... were made by balloonists. These contraptions were quite strange and hardly fulfilled their purpose of actually propelling the balloon. The basic propeller had evolved from the simple concepts of da Vinci, and was slowly becoming an effective means of aerial propulsion. To reach the next plateau of flight an increased knowledge of the propeller would be needed, and the mysteries of the propeller and mechanical power would need to be solved. These substantial tasks remained for aviation's pioneers to tackle during the 19th century. Throughout the 19th century, aviation pioneers explored and tinkered wi ...
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Chemistry: Acid-Base Titration
Number of Words: 496 / Number of Pages: 2
... pink was result in basic solutions. Strong acid (contained H+ ion) and
strong base ( contained OH ) were 100% ionized in water and they were all
strong electrolytes. Procedure:
Part A. Investigating solid NaOH for use as a possible primary standard First of
all, The weight of a weighting paper was measured in analytical balance, then
added two pellets of NaOH and reweighed the total amount of those. At the end of
the lab, reweighed the combination and recorded all results in the lab manual.
Part B. Preparation and standardization of a solution of sodium hydroxide A
clean beaker, burette, three 250m ...
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The Destruction Of Red Tides
Number of Words: 885 / Number of Pages: 4
... surface layer above colder nutrient-rich waters. "heavy rains might have helped the red tides develop by pouring fresh water and nutrients into surrounding sea waters," (New York Times: Sept. 19, 1996) Fast growing algae quickly strip away nutrients in the upper layer, leaving nitrogen and phosphorus only below the interface of the layers, called the pycnocline. Many swim at speeds of 10 meters a day, and some go through vertical migration rising to the top of the water to get sun and then swimming down to the pycnocline to take up nutrients at night. Another cause of red tides is from human p ...
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Alchemy
Number of Words: 657 / Number of Pages: 3
... so they could become wealthier then they already were. Basically they saw easy money and would waste their lives and money to find out how to get it.
There was another side to alchemy them just changing lead into gold, people not only wanted to be rich but they also wanted to live forever. The Elixir was the substance that would extend the life of the user. They thought that the elixir would start its own transformation in the human body, incorruptibility and hence longevity. (Halleux 140) By making these substances would sometimes get the opposite effect of what they were intended, because sometim ...
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Growth Dynamics Of E. Coli In Varying Concentrations Of Nutrient Broths, PH, And In The Presence Of An Antibiotic
Number of Words: 2626 / Number of Pages: 10
... that of the control, these were: Chloramphenicol producing 89,3 01
cells/ml; glucose producing 411,951 cells/mL; lactose producing 477,441 cells/mL
and finally pH 6.0 producing 579,557cells/mL. The remaining four media, after
calculations, produced cell counts greater than the control: 2X with 1,087,009
cells/mL; 0.5X with 2,205,026 cells/mL; pH 8 with 3,583,750 cells/mL and finally
pH 7.0 with 8,090,325 cells/mL. From these results the conclusion can be made
that the environment is a controlling factor in the growth dynamics of E. coli.
This was found through the regulation of pH and nutrient ...
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Mars
Number of Words: 1790 / Number of Pages: 7
... condense out, forming clouds that rise high in the atmosphere or swirl around the slopes of towering volcanoes. Local patches of early morning fog can form in valleys. At the Viking Lander 2 site, a thin layer of water frost covered the ground each winter. There is evidence that in the past a denser Martian atmosphere may have allowed water to flow on the planet. Physical features closely resembling shorelines, gorges, riverbeds and islands suggest that great rivers once marked the planet.
is smaller and, because of its greater distance from the Sun, cooler than the eearth. It has seasons similar ...
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