describe how temperature and salinity affect the density of water
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How does salinity affect the density of water? General Answer: An increase in salinity causes a increase in density and conversely, a decrease in salinity causes a decrease in density. The effect is quite linear, though it has a temperature dependence that affects how much the density changes. Specific Answer:
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How does temperature and salinity affect water density ? Since this one has more marbles for each box part (4) than the first one (3), we can say that the second one is DENSER. Salinity adds to mass (no. of marbles) but not to the volume (size of box). Thus, the more salinity, the denser. Temperature may also affect water density. When the temperature is high, molecules in water disperse and move around more rapidy than they usually do in order to spread the heat energy.
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The Ocean and Temperature The difference in density of cold water versus density of warmer water is responsible for ocean currents and upwelling. Warm seawater floats and cold (4°C), dense (1 g/cm3), seawater sinks, so ocean temperatures also vary across the surface and into the depths.he Ocean and Temperature. Temperature and density share an inverse relationship. As temperature increases, the space between water molecules increases—also known as density, which therefore decreases. If the temperature of water decreases its density increases, but only to a point.
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How Does Temperature Affect Density? As temperature increases, the density of liquids and gases decreases; as temperature decreases, the density increases. Density is the amount of mass per unit of volume.
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When water freezes its density increases or decreases? It causes the density to increase because the more salt added to water, the more buoyant or dense it becomes. Salt itself does not evaporate as the water does so as the water … evaporates the salt content is effectively increased, therefore making the water more saline or dense. 4 people found this useful.
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Where is the salinity of the ocean when its levels are high? Is it at the equator, the north pole or at the tropic? Temperature and density of ocean water are related inversely: warm water means low density, cold water means denser seawater. The salt content of the water also affects Ocean density. Sea Surface Salinity: Sea water is about a 3.49% salt solution
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Abiotic and Biotic Factors - Freshwater Ecology Temperature affects the density of substances, and changes in the density of water means more or less resistance for animals who are travelling in the freshwater environment. The next page will continue to look at how these abiotic factors affect the way in which organisms operate in the freshwater ecosystem.
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Water Temperature Density and Water Temperature. Water temperature and water density are directly related. As the temperature of water increases or decreases, it will alter the density of water. This is a unique relationship in that unlike most materials, the density of pure water decreases approximately 9% when it freezes 29.
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Seawater Changes in ocean water density with depth at different latitudes. Seawater, or salt water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, or 599 mM), which is a specific gravity of about 1.025.This means that every kilogram (roughly one litre by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts (predominantly sodium (Na+) and chloride (Cl−) ions).verage density at the surface is 1.025 g / ml. Seawater is denser than both fresh water and pure water (density 1.0 g/ml at 4 °C (39 °F)) because the dissolved salts increase the mass by a larger proportion than the volume. The freezing point of seawater decreases as salt concentration increases.
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Density of Ocean Water The density of pure water is 1000 kg/m 3. Ocean water is more dense because of the salt in it. Density of ocean water at the sea surface is about 1027 kg/m 3. This is a simple density-depth ocean water profile. You can see density increases with increasing depth. The pycnocline are layers of water where the water density changes rapidly with depth.
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Properties of Seawater How does latitude affect seawater salinity? The salinity of seawater is determined by how much freshwater enters the ocean in the form of precipitation, melting sea ice, and runoff from rivers, and how much exits through evaporation. Salinity is higher in the temperate and tropical areas where evaporation rates are higher than in polar regions.
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Temperature Effects on Density Divide by 103 to get the density in g/mL. Let's look at the density of water at 25 deg C and compare that to a higher temperature, 80 deg C. The density decreases from 0.9970 g/mL to 0.9718 as it is heated.
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Density of Ocean Water 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. Ocean water gets more dense as temperature goes down. So, the colder the water, the more dense it is. Increasing salinity also increases the density of sea water. Less dense water floats on top of more dense water. Given two layers of water with the same salinity, the warmer water will float on top of the colder water.
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- Water has a maximum density of 1 g/cm3 at 4 degrees Celsius or about 34 degrees Fahrenheit. This is the highest density water reaches at any temperature, and so it is defined as maximum density. From this point, the density of water decreases as its temperature increases.s the temperature of the water continues to increase, the density of the water decreases. At 80 degrees Celsius, the water has a density of .9718 g/cm3.
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How does salinity affect the density of water? Adding one milliliter of sodium chloride to a liter of water will only increase the volume by about one half of a milliliter. Beyond that sodium has an atomic mass of about 23 and chlorine about 35.5, while a water molecule's mass is about 18. So the components of salt are heavier than the components of water.
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Conductivity, Salinity & Total Dissolved Solids The conductivity of seawater is dependent on the salinity and temperature of the water 38. Measurements will vary between the Equator and the poles as well as with depth due to conductivity’s dependence on temperature 38. As with conductivity, the expected salinity of a body of water can only be estimated.hen water temperature increases, so will conductivity 3. For every 1°C increase, conductivity values can increase 2-4% 3. Temperature affects conductivity by increasing ionic mobility as well as the solubility of many salts and minerals 30.
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Water Salinity When fresh water is added for example by rivers, or precipitation, the salinity of the ocean will decrease. That explains why some oceans are less salty than others Factors like the melting of ice, the inflow of river water, rain, snowfall, evaporation, wind, wave motion and currents affect the salinity. cubic foot of seawater contains about 2.2 pounds of salt, but 1 cubic foot of fresh water from Lake Superior contains 0.01 pound of salt, or about one sixth of an ounce. That means sea water is about 220 times saltier than a fresh water lake.
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Seawater ) ions). Average density at the surface is 1.025 kg/l. Seawater is denser than both fresh water and pure water (density 1.0 kg/l at 4 °C (39 °F)) because the dissolved salts increase the mass by a larger proportion than the volume. The freezing point of seawater decreases as salt concentration increases. At typical salinity, it freezes at about −2 °C (28 °F).
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- How much does the seawater density increase upon cooling from 20 to 0C? Seawater density increases from 1.0240 g/cm3 at 20C to 1.0273 g/cm3 at 0C at a constant salinity. Globally, there is an average of about a 20C temperature decrease from the surface to bottom of ocean.
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Density of Ocean Water So, the colder the water, the more dense it is. Increasing salinity also increases the density of sea water. Less dense water floats on top of more dense water. Given two layers of water with the same salinity, the warmer water will float on top of the colder water.
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How does temperature affect the density of water? | Live Experiments (Ep 39) | Head Squeeze Morna Fisken shows us how temperature can change the density of water. What you need: Hot water. Cold water. Pint glasses X2. Stirrer. Red and Blue food colouring. A thin piece of card or plastic. Instructions: Fill up pint glass with cold water add blue food colouring.
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- The density of water at 25 degrees Celsius is 0.997 grams per milliliter. With the exception of temperatures from 0 to 4 degrees Celsius, the density of water decreases as the temperature rises and also decreases as the temperature falls.
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Hot Water Thermal Expansion Rate Hot Water Pressure Increase in Hot Water Tanks or Boilers Increasing water pressure does not have much effect on the water volume nor water density. For example, the density of water at 3.98 °C (it's most dense temperature) is 1000 kg/m3. The density of water at 100 °C is 958.4 kg/m3 and the density of water at 030 °C is 983.854 kg/m3. - Wikipedia and other sources.
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Density of Ocean Water Temperature has a greater effect on the density of water than salinity does. 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.
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Ocean Water Density Calculator This calculator requires the use of Javascript enabled and capable browsers. This script determines the density of water as a function of temperature, salinity and pressure. A special thanks to Dr. Barry Klinger of George Mason University for his help with this script.his calculator requires the use of Javascript enabled and capable browsers. This script determines the density of water as a function of temperature, salinity and pressure. A special thanks to Dr. Barry Klinger of George Mason University for his help with this script.