Oceanography

The sea is the most obvious feature of the earths surface. Approximately 70 percent of this surface is covered by water, in haleness way or another. Beneath this water ar the long-familiar sands of the beaches, bottoms of bays, and the inshore ocean. Farther offshore this water covers an direful submarine topography of underwater canyons, trenches, mountains, and plains. Unlike the continents, which are physically broken from one another, the oceans are continuous and interconnected. Since the world ocean is continuous(M.J. Keen) it has comparable characteristics throughout. In the early 1870s oceanographers collected seawater samples from all of the seas of the world at a variety of depths. When analyzed, the samples were found to have quite like characteristics. These findings convinced many that a method of check was needed. The ascertain of oceans was named oceanography.         Density, table salt, and temperature are very important concepts in the deliberate of oceanography. The salinity and temperature of the water influence its density, and the differences in density are the major factor in understanding the constituteation of currents and the positions of water rear end in the sea. In addition, temperature and salinity play major roles in influencing the distribution of plants and animals.         The repositorys of the sea floor may be deviate integrity into lithogenous, hydrogenous, biogenous, and cosmogenous sediments.

Lithogenous sediments are the major sediments on the ocean floor. They are derived from the chemic substance and mechanical weathering of rocks. Biogenous s! ediments are represent primarily of the cautionary outter covering of small marine animals and plants. If these trunk comprise at least thirty percent of the sediment it is called an ooze. Oozes were named for the types of organisms that formed them. Hydrogenous sediments form as a result of the chemical reactions that occur in the seawater. These reactions result in the... If you want to nark a wide essay, order it on our website: OrderCustomPaper.com

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