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The salinity is basically how much salt is in the ocean. It increases in sub tropical places because there's not a lot of rain and more evaporation. The water evaporates and the salt stays behind thus making the water saltier. The salinity decreases in places more near the equator because it is always raining and that fresh rain dilutes the salt. It is also less salty near the coast because of the freshwater runoff "Seawater".
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∙ 15y ago
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∙ 15y ago* at the point where a river enters the ocean * an area where there is heavy rainfall * at the point where a glacier melts into the ocean
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∙ 13y agoEvaporation because when water evaporates, it leaves salt behind so then the water becomes saltier.
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∙ 7y agoEvaporation and formation of sea ice makes it increase.
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∙ 12y agoadding water
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What is one factor that decreases salinity in seawater?
Salinity in oceans decrease when near a river because the river adds fresh water, which lowers the percentage of salt in the water, causing the salinity to decrease.
If the average salinity of seawater is 29ppt how many grams of dissolved salts will 500g of seawater contain?
5 grams
In addition to salinity what factor affects the density in sea water?
Density of seawater is largely a function of two factors: depth, that is, the deeper water is more dense than water at shallower levels; and temperature - water at higher temperatures is less dense than cooler water. Salinity is also a factor, but that's a localized phenomena simply because all the worlds oceans are in fact one large ocean and maintains an average overall salinity.
What is the most negatively charged ion dissolved in seawater?
The most negatively charged ion dissolved in seawater is chloride. In fact, Cl- makes up 55 percent of the seawater's salinity.
What are two natural processes that increases the salinity of seawater?
Evaporation and the formation of sea ice.
What causes the density of seawater to increase?
The density of seawater increases if salinity increases.
What is the most important factor affecting seawater density?
Relative salinity is the most important factor in seawater density.
What processes increase the salinity of seawater?
runoff from land
How does the salinity of sea ice compare to the salinity of normal seawater?
Ice has zero salinity. When it is frozen, the salt is pushed out. Therefore, since the salinity of normal seawater is about 35 ppt, it has 35 ppt more salinity than seawater.
What is one factor that decreases salinity in seawater?
Salinity in oceans decrease when near a river because the river adds fresh water, which lowers the percentage of salt in the water, causing the salinity to decrease.
Which is not a process the decreases the salinity of seawater?
evaporation
Is not a process that decrease the salinity of seawater?
evaporation
What is the average salinity of seawater by weight?
3.5%
Why do oceanographers take measurements of the of the seawater?
Conductivity can be used to calculate the salinity of the water.
What is the best way to remember salinity?
Drink a (small) glass of seawater and you will remember salinity.
What is the measure of the total amount of solid material dissolved in seawater called?
Salinity
What is the average salinity in the oceans?
The average salinity of seawater is 35 parts per thousand (or ppt).
