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Seawater salinity is primarily affected by processes such as evaporation, precipitation, river runoff, and ice melting or formation. Evaporation increases salinity by removing water while leaving salts behind, whereas precipitation and river runoff can dilute salinity by adding freshwater. Additionally, the melting of polar ice and the formation of sea ice can influence salinity levels; melting ice introduces freshwater, while freezing seawater increases salinity by excluding salts. These processes create variations in salinity across different regions and depths of the ocean.
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Which is not a process the decreases the salinity of seawater?
Evaporation is a process that increases the salinity of seawater, not decreases it. Other processes that decrease the salinity of seawater include precipitation, melting of icebergs, and the input of freshwater from rivers.
What processes increase the salinity of seawater?
runoff from land
What are two natural processes that increases the salinity of seawater?
Evaporation and the formation of sea ice.
How could desalination affect the salinity of ocean?
Desalination does not directly affect the salinity of the ocean, as the vast volume of seawater is not significantly impacted by the relatively small amount of water that is desalinated. However, the brine left over from desalination processes, if not properly managed, can increase salinity in the immediate area where it is discharged, potentially affecting local marine ecosystems.
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 are 2 main factors that influence density if seawater?
Temperature and salinity are the two main factors that influence the density of seawater. Colder seawater is denser than warmer seawater, while seawater with higher salinity is denser than seawater with lower salinity.
What is the Processes that increase the density of seawater include evaporation?
Processes that increase the density of seawater include evaporation, which removes water and concentrates the salt content. This increased salinity makes the water denser. Other processes that can increase seawater density include cooling and the formation of sea ice.
How does the cryosphere and hydrosphere affect ocean salinity?
The cryosphere, which includes ice and snow, influences ocean salinity primarily through processes like melting and freezing. When ice melts, it releases freshwater into the ocean, decreasing salinity in the surrounding waters. Conversely, when seawater freezes, it leaves behind salt, increasing salinity in the remaining liquid water. Additionally, changes in precipitation and runoff from snowmelt can further affect salinity levels in coastal areas.
What is the average salinity of seawater by weight?
The average salinity of seawater is about 35 grams of dissolved salts per kilogram of seawater, or 3.5% by weight.
What are two natural processes that can increase the salinity of seawater?
Two processes are: >regular dissolving of mineral salts from the surroundings >more and more animals decafcdsafying in the sea.ghgd
What is the salinity of seawater with chlorinity of 19.65 per mil?
To calculate the salinity of seawater from chlorinity, you can use the relationship that salinity is approximately 1.805 times the chlorinity. Given a chlorinity of 19.65 per mil, the salinity would be roughly 35.4 grams per kilogram (or per mil) of seawater. Therefore, the salinity of the seawater with a chlorinity of 19.65 per mil is about 35.4 per mil.
How does temperature affect water?
The temperature and salinity of seawater determine its density. Water gets denser as it gets saltier and reaches a maximum density at 4 °C. Salinity does affect the boiling point and freezing point of water, but not its temperature.
