Essay on the ocean floor meaning
Advertisements: Generally speaking, the average salinity of the oceans.2 0, about 35 parts of salt in 1,000 parts of water. A width of 20 to 100 miles is generally encountered. The range of salinity is negligible where there is free mixing of water by surface and sub-surface currents. If you looked closely, you could see air bubbles rising up from small holes in the shallow pools, a telltale sign of a hermit crab. (iii) The clays: These occur mainly as red clays in the deeper parts of the ocean basins, and are particularly abundant in the Pacific Ocean. If you were to walk the other way down the beach, towards the point, the sea walls were lower, but they ran along for ages. Advertisements: Read this essay to learn about the Oceans. The activities of plate boundaries have a direct effect on nature. The ocean floor may be more exciting to explore than any mountain above sea level. Beginner-swimmers will find it much easier to float here than anywhere else! Relief of the Oceans: The ocean basins are in many ways similar to the land surface. In areas of inland drainage without links with the oceans, continuous evaporation under an almost cloudless sky causes the accumulation of salts around the shores.
Essay on the Oceans - Your Article Library
Although only 12 of essay on the ocean floor meaning the oil entering the sea is caused by spills, they can deteriorate ocean life and environment more than any other pollution. We depend on the ocean for so much in our life, without it we would surely become extinct. When people hear the word earthquake the first thought is fear. (iii) Salinity: The salinity of ocean water varies from place to place. The pressure of the water would crush you. There was a huge white monastery next door, with a high sea wall in front. The Norwegian coast, even at latitudes 60 to 70N.
It decreases rapidly for the first 200 fathoms, at the rate of. This landscape is pretty unique. (ii) The amount of fresh water added by precipitation, streams and icebergs: advertisements: Salinity is lower than the average 35 0 in equatorial waters because of the heavy daily rainfall and high relative humidity. Here the direction of the currents changes completely with the direction of the monsoon winds which come from the north-east in winter and south-west in summer. Floor, when most individuals think about the ocean they visualize water, and the creatures of the sea. The older echo-sounding techniques have now been replaced by radar sounding and electrical echo devices to find the precise depth; of ocean floors and map the relief of the oceans. (ii) The oozes: These are pelagic deposits because they are derived from the oceans. Deepsea Challenger, is capable of reaching the bottom. There are many types of plate boundaries. It shrivels up like a wilted flower, lifeless. The reduction of temperature with latitude is however never constant, because of the interference by warm and cold currents, winds and air masses. Is ice-free throughout the year! Dirt can also spill into waterways from top soil or silt from fields or construction sites, causing endangerment to fish and wildlife habitats.
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Earthquakes are not restricted by boundaries and time zones they have occurred in areas all over the globe. The Red Sea which records a temperature of 85 to 100F. The phenomena are described as a vibration in earths surface caused by eruptions or movements along a fault line. The temperate oceans have lower salinity due to the lower temperature and a lower rate of evaporation. The Baltic, Arctic and Antarctic waters have a salinity of less than 32 0 because of the colder climate with little evaporation and because much fresh water is essay on the ocean floor meaning added from the melting of icebergs, as well as by several large pole ward-bound rivers,.g. Ports of eastern Canada even at 45N are thus icebound for almost half the year. Each one show more content, according to "Plate Tectonics" (2010 Two plates sliding past each other forms a transform plate boundary. This natural disaster causes worldwide devastation. You'll also see things that look like mountains.
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Essay on the Temperature of Ocean Water. Out of all of these ways, oil spills can cause a noticeably excessive amount of damage to the ocean. It awakens me from my trance, imposed upon me by the insensibility of the world. The most famous international oceanographic research centre is essay on the ocean floor meaning the International Council for the Exploration of the Sea with its headquarters in Copenhagen. When deprived of water, a sponge becomes hard and brittle. Read this lesson to learn about what you'll see on the ocean floor from abysses and slopes to hydrothermal vent ecosystems. This lesson is all about the ocean floor. (b) Their limited depth and gentle slope keep out cold under-currents and increase the height of tides. Ocean pollution can eventually cause air pollution.
In June, at low essay on the ocean floor meaning tide, you could walk down there and the sandbar would be teeming with horseshoe crabs, heavily armored and prehistoric-looking. Try it risk-free No obligation, cancel anytime. As warm water is lighter and rises, and cold water is denser and sinks, warm equatorial waters move slowly along the surface pole wards, while the heavier cold waters of the polar regions creep slowly along the bottom of the sea equator wards. Sea floor spreading and plate boundaries are not a common subject to anyone outside of a scientific or marine biology lab. The circulation of the Gulf Stream Drift and the Canaries Current). Water relaxes sponges, fills them up, makes them soft and supple. Red clay is believed to be an accumulation of volcanic dust blown out from volcanoes during volcanic eruptions. Those that flow from polar regions equator wards have a lower surface temperature and are cold currents. After reading this essay you will learn about:. For instance, the tip of southern Chile diverts part of the West Wind Drift northwards as the Peruvian Current.
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(iv) The ocean deeps: These are the long, narrow trenches that plunge as great ocean deeps to a depth of 5,000 fathoms or 30,000 feet! (iii) The deep-sea plain: This is the undulating plain lying two to three miles below sea level, and covering two-thirds of the ocean floor, generally termed the abyssal plain. Temperature of Ocean Water: Like land masses, ocean water varies in temperature from place to place both at the surface and at great depths. Sealed bottles and other floating objects containing instructions for reporting their precise time and place of discovery are released in large numbers to compute the rate and direction of drift and current flow. Their direction of movement is indicated by the arrows. When you go deep enough on the ocean floor, sunlight stops penetrating, so there isn't much life in these dark waters. 1181 Words5 Pages, everything in this world we use comes from the ocean in some way. Similarly the shoulder of Brazil at Cape Sao Roque, divides the west-flowing equatorial currents into the Cayenne Current which flows north-westwards and the Brazilian Current which flows south-westwards. Hence waters of low salinity flow on the surface of waters of high salinity while waters of high salinity flow at the bottom towards waters of low salinity. Beyond this, the drop is scarcely noticeable, less than.
Air pollution can also cause ocean pollution by being absorbed into the water and contaminating it, and vice versa. Discovery of the Oceans: The oceans, comprising more than 70 per cent or 140 million square miles of the earths surface, have tremendous potential waiting to be developed. Unlike the solid earth, ocean water is mobile and variations in the temperature between different parts of the oceans can be expected. The density of the water is so high that in Lake Van or the Dead Sea, it is almost impossible to sink. This means that anything larger than 5 kilometers (3.1 miles) can be seen. The muds are referred to as blue, green or red muds; their colouring depends upon their chemical content. Just what is the ocean floor? Since these are underwater, they are called seamounts.
It is interesting to note that even in the deepest ocean trenches, more than 6 essay on the ocean floor meaning miles below the surface, the water never freezes. This is expressed as salinity, the degree of saltiness of water, either as a percentage or more often in parts per thousand. Contents: Essay on the Discovery of the Oceans. Ocean exploration for the observation and recording of oceanographic data is a very expensive matter. There are many different ways the ocean can become polluted. For example in the Mediterranean region, there is great difference in salinity between the waters of the open Atlantic and those of the partially enclosed Mediterranean Sea. Closer to shore, you'll find corral forests on the ocean floor that are home to a myriad of sea creatures from little clownfish to sea urchins. You can't be without protective equipment when you are down that deep. In the same way, coasts warmed by warm currents, such as the North Atlantic Drift, have their surface temperature raised. All sea water contains large amounts of dissolved mineral matter of which sodium chloride or common salt alone constitutes more than 77 per cent. Essay on the Oceanic Deposits of the Ocean.
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Show more content, fishnets improperly discarded into the ocean can also cause major issues, tangling into unsuspecting mammals and fish. Generally, the mean essay on the ocean floor meaning annual temperature of the surface ocean water decreases from about 70F. The planetary winds are probably the dominant influence on the flow of ocean currents. That's why the issue of ocean pollution is so important and needs to be addressed as soon as possible. At other times, the plates are locked together, Show More). The continental shelf is thus a shallow platform whose width varies greatly, from a few miles in the North Pacific off the continent of North America, to over 100 miles off north-west Europe.
Pretty much, you'll see what you see on land, just more dramatic - the cliffs are steeper, the abysses are deeper, and there's no light once you get deep enough. Select a subject to preview related courses: To unlock this lesson you must be a m Member. For example the North-East Trade Winds move the North Equatorial Current and its derivatives, the Florida Current and the Gulf Stream Drift to warm the southern and eastern coasts.S.A. Movements of Ocean Current. Due to the free movement of ocean water, the proportions of different salts, remain remarkably constant in all oceans and even to great depths. Its rate of accumulation is equally uncertain. Floor, anitreas Weeks SCI/209 January 26, 2013 Cynthia Collin-Clausen The Creation of the, ocean. Automatic-recording thermometers and other sensitive instruments can be lowered to any required depth by stationary vessels with laboratory facilities for processing any required data. Many regard the continental shelf as part of the continent submerged due to a rise in sea level,.g. Some of the underlying factors are explained below: (i) The planetary winds: Between the equator and the tropics blow the Trade Winds which move equatorial waters pole wards and westwards and warm the eastern coasts of continents.
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One natural occurrence that is a direct result of plate boundary interaction is earthquakes. The continental shelves are therefore the essay on the ocean floor meaning richest fishing grounds in the world,.g. The air we breathe, the water we drink, even the products we use day to day, would not be possible without the ocean. In some places where the coasts are extremely mountainous, such as the Rocky Mountain and Andean coasts, the continental shelf may be entirely absent. One would run into the next, white stone into orange brick into gray rock. Unlock Content Over 75,000 lessons in all major subjects Get access risk-free for 30 days, just create an account. Contrary to our expectations, most of the deepest trenches are not located in the midst of oceans. The dominant process is slow sedimentation where the eroded particles very slowly filter through the ocean water and settle upon one another in layers. In the northern hemisphere this is a clockwise direction (e.g. Compare and contrast ideas behind plate tectonics and the theory of the continental drift.
It all starts with bacteria that feed on chemicals such as hydrogen sulfide. When I was a little girl, my family had a summer house on a point. A gradient of 1 in 500 is common to most continental shelves. However, since we've been polluting the ocean as far back as Roman times, the evidence of ocean pollution becoming a major problem is all too clear. Most of the worlds greatest seaports including Southampton, London, Hamburg, Rotterdam, Hong Kong and Singapore are located on continental shelves. Deep sea core samples are obtained by boring for the study of the oceanic depositsthe various kinds of oozes, muds and clays. It is less than 10F for most of the open seas. (i) The continental shelf: This is, in fact, the seaward extension of the continent from the shoreline to the continental edge marked, approximately, by the 100 fathom (600 feet) isobath (isobaths are contours marking depths below sea level). The ocean floor is literally the floor of the ocean. In a similar manner, the Westerlies of the southern hemisphere, drive the West Wind Drift equator wards as the Peruvian Current off South America and the Benguela Current off southern Africa.
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