![]() ![]() The density of ocean water is rarely measured directly. That is, water moves along the layers with the same density. Circulation in the depths of the ocean is horizontal. The deep ocean is layered with the densest water on bottom and the lightest water on top. So, the density of ocean water increases and increases as you go to the bottom of the ocean. The temperature of the ocean decreases and decreases as you go to the bottom of the ocean. So a layer of water with higher salinity can actual float on top of water with lower salinity if the layer with higher salinity is quite a bit warmer than the lower salinity layer. There is one catch though! Temperature has a greater effect on the density of water than salinity does. Given two layers of water with the same salinity, the warmer water will float on top of the colder water. Less dense water floats on top of more dense water. Increasing salinity also increases the density of sea water. So, the colder the water, the more dense it is. Ocean water gets more dense as temperature goes down. There are two main factors that make ocean water more or less dense than about 1027 kg/m 3: the temperature of the water and the salinity of the water. Density of ocean water at the sea surface is about 1027 kg/m 3. Ocean water is more dense because of the salt in it. The density of pure water is 1000 kg/m 3. ![]() Tonne, also known as a metric ton (t), equal to 1,000 kg (2,205 lb) or 1 Mg.A fun activity dealing with the density of salt water versus fresh water.Tonnage, volume measurement used in maritime shipping, originally based on 100 cubic feet (2.83 m 3).The long ton is traditionally used as the unit of weight in international contracts for many bulk goods and commodities. The long ton was the unit prescribed for warships by the Washington Naval Treaty of 1922 for example, battleships were limited to a displacement of 35,000 long tons (36,000 t 39,000 short tons). In the United States, the long ton is commonly used in measuring the displacement of ships, the volume-to-carrying-weight of fuels, and the trade of baled commodities and bulk goods like iron ore and elemental sulfur. ![]() ![]() If still used for measurement, then the word "ton", is taken to refer to an imperial or long ton. The measure used since then is the metric ton, identified through the word "tonne". To comply with the practices of the European Union, the British Imperial ton was explicitly excluded from use for trade by the United Kingdom's Weights and Measures Act of 1985. the weight of 35 cubic feet (0.99 m 3) of salt water with a density of 64 pounds per cubic foot (1.03 g/cm 3).exactly 12% more than the 2,000 pounds of the North American short ton, being 20 long hundredweight (112 lb) rather than 20 short hundredweight (100 lb).2,240 pounds or 1,016 kilograms or 1.016 metric tons.Unit equivalences Ī long ton, also called the weight ton (W/T), imperial ton, or displacement ton, is equal to: The long ton arises from the traditional British measurement system: A long ton is 20 long hundredweight (cwt), each of which is 8 stone (1 stone = 14 pounds). It is not to be confused with the short ton, a unit of weight equal to 2,000 pounds (907.18474 kg) used in the United States, and Canada before metrication, also referred to simply as a "ton".Ī long ton is defined as exactly 2,240 pounds. It is used in the United Kingdom and several other Commonwealth of Nations countries alongside the mass-based tonne defined in 1799, as well as in the United States for bulk commodities. It is the name for the unit called the " ton" in the avoirdupois system of weights or Imperial system of measurements. The long ton (symbol: LT ), also known as the imperial ton or displacement ton, is a measurement unit equal to 2,240 pounds (1,016.047 kg). ![]()
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