Essays Tagged: "sea water"

European Expansion beyond territorial borders between 1450 and 1650

boats called galleys, these ships manned by convicts or slaves at the oars were not made for rough sea water. A newer ship requiring less crew for defense and for maneuvering was created. This ship w ... altitude of the sun and other celestial bodies which allowed them to position themselves on a map. Sea charts containing newer information such as distances, sea depths, and geography led to better e ...

(1 pages) 99 1 4.6 Apr/2002

Subjects: Law & Government Essays

Water Transitions

Brackish water is a fairly salty mixture of freshwater and sea water. It isunique in numerous ways and is a life giving ecosystem. To understand whatbrackish w ... eventy percent of the human body is made up of freshwater (744Headlam).Next, there is saltwater, or seawater. Seawater consists of fifty-five percentchlorine, and thirty-one percent sodium (Groliers). ... volume of the world's water, andcovers more than seventy percent of the earth's surface (Groliers). Sea waterdoesn't just contain hydrogen, oxygen, sodium, and chlorine; it also contains everynaturall ...

(3 pages) 55 0 4.5 Nov/1996

Subjects: Science Essays > Chemistry

Dredging the Hudson River for PCBs - The history of the Hudson, Pros and Cons of Dredging,

n estuary, " An estuary is a semi-enclosed coastal body of water with a free connection to the open sea and within which sea water is diluted by fresh water"( Hudson River begi ... s the tide rises in the Atlantic, salt water is pushed upriver" ( During the dry season the salt water travels only as far as Newburgh, but during the rainy season it travels as far ...

(7 pages) 61 0 3.9 May/2002

Subjects: Science Essays > Biology


The Element: ChlorineGeneral InformationWe researched the chemical element known as chlorine. Chlorine has an atomic number of 17 and an atomic w ... ogen elements. Chlorine is a nonmetal. It is estimated that 0.045% of the earth's crust and 1.9% of sea water are chlorine. Chlorine combines with metals and nonmetals and organic materials to form hu ...

(5 pages) 71 0 3.0 Nov/1996

Subjects: Science Essays > Chemistry

"The Submarine"

r subs had an air supply in the ship that lasted about 30 minutes. New subs can make air out of the sea water.Getting subs to move is hard. Cornelius van Drebbel's sub had oars. Other old subs had bic ...

(2 pages) 51 0 2.4 Apr/2003

Subjects: Science Essays > Engineering

Osmoregulation in Fish.

ds of a salt water fish are hypotonic (higher in water concentration) compared with the surrounding sea water - the sea water is therefore hypertonic. Because of this they constantly lose water by osm ... le gill and gut membranes. To replace its loses and maintain its water balance, the fish drinks the sea water. The chloride secretory cells in the gills of the fish actively secrete the excess salt - ...

(1 pages) 22 0 5.0 Sep/2005

Subjects: Science Essays > Biology


al storms which gather heat and energy through contact with warm ocean waters. Evaporation from the sea water increases their power. When they come onto land, the heavy rain, strong winds and heavy wa ... rth hurricane, third major hurricane, and first Category 5 hurricane of the 2005 Atlantic hurricane season. It caused great destruction in Bahamas, South Florida, Louisiana (especially Greater New Orl ...

(2 pages) 65 0 5.0 Dec/2005

Subjects: Science Essays > Earth Sciences > Meteorology

The proposed desalination plant of Kurnell, Botany Bay

stion "which one is more important?" The desalination plant uses a process called reverse osmosis. Sea water is pushed through a fine mesh to filter out the salt resulting in fresh water. It is estim ... water for 1.4 million people (a third of Sydney's population). This will assure that during drought season, Sydney's water supply will not be undermined. The desalination plant will also be in use in ...

(6 pages) 41 0 5.0 May/2006

Subjects: Science Essays > Environmental Science

Global Warming (viewpoint essay)

he GCC." - A news article that was published by the Global Climate Coalition (GCC) took my eye when searching for a research topic. Yes, I believe that we should have certain set of rules to protect o ... iven towards the environment has been negligible. This has brought about sudden changes in climate, sea water and even melting of glaciers. I believe that every action has its own reaction; it might t ...

(3 pages) 131 0 4.2 Jan/2007

Subjects: Science Essays > Atmospheric Sciences


erent reasons, such as for airplanes, aircraft's, missiles, hulls of ships and the parts exposed to sea water, artist paint, hip replacements, and joints. However it is mostly used in house paints.Tit ...

(1 pages) 12 0 0.0 Nov/2001

Subjects: Science Essays > Chemistry

Cleaning up after the exxon valdez was a mistake

Cleaning Up after the Exxon Valdez Was A Mistake Through many hours of research I have determined that the spill cleaning techniques used to clean the Prince William Sound a ... About a day after the spill, depending on temperature and wave action, an emulsification of oil and sea water occurs, leading to formation of a highly viscous material that contains about 70% water. T ... terial is very sticky, and it adheres to almost all objects that it encounters, including birds and sea otters. Abelson) There has been one report of a minor fish kill in Prince William Sound. Observa ...

(5 pages) 22 0 3.0 Feb/2008

Subjects: Science Essays > Biology

Article Response: "Can we set fire to water?"

fire, but in this situation, scientists have come up with a smart way of using water, particularly sea water to ignite into a fire. The article tells us the new, unique method of using sea water and ... I first read this article I was speechless because I never thought that there was ever a way to use sea water as a source of fuel and energy. The article explains how energy from the radio waves is ca ...

(2 pages) 12 0 0.0 Sep/2008

Subjects: Science Essays > Chemistry

Animal physiology study notes

permeable to water than normal fresh water animal. Those two kinds believed to come originally from seawaterThe production of diluted urine in fresh water animal isn’t necessary but they produce ... l isn’t necessary but they produce it because it save energySponge and annelide never left the seawater so this is why their body is isosmotic to seawater(evolutionary adoptation)Hagfish is the o ...

(2 pages) 837 0 0.0 Mar/2009

Subjects: Science Essays > Biology

Needless Torture

High altitude experiments, incendiary bomb experiments, freezing experiments, sea-water experiments, malaria experiments, mustard gas experiments, spotted fever (Typhus) experime ... t, they are frequently killed; however, some receive the ‘pleasure’ of living through continued research for months or even years (Animal Experiments). Yet while even the United States Government de ... ingdom who have banned experimentation on primates, the United States still federally funds eight research centers that continue to perform horrific experiments on approximately one thousand chimpanze ...

(3 pages) 11 0 0.0 Jan/2010

Subjects: Humanities Essays > Philosophy