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How do you explain the peculiarity on the salinity of sea water and similarly for the hardness of water?
The salinity of seawater is primarily due to the presence of dissolved salts, mainly sodium chloride. This occurs over time as water flows through rivers, picks up minerals from rocks, and eventually reaches the ocean. The hardness of water is caused by the presence of minerals such as calcium and magnesium. These minerals can enter water sources through the dissolution of rocks and soil, contributing to the hardness of the water.
How do temperature and salinity drive ocean current convection and what is the type of ocean current called?
Temperature and salinity drive ocean circulation by altering seawater density. Warm, fresh water is significantly less dense than cold salty water and will therefore rise to the top in the ocean. Any process that alters temperature or salinity (such as rain, sea ice formation or seasonal variation) will change the density of the water and allow it to move in the water column, causing circulation of water on a global scale. This is known as thermohaline circulation. Because things such as rainfall and temperature tend to be relatively constant in a given area over a long period of time, a set current of water known as the global conveyor belt has arisen. It plays an incredibly important role in heat transfer over the earth.
How salinity and temperature affects the seawater?
Salinity and temperature are conservative properties of seawater that directly affect the density of seawater. This is an extremely important property because it in turn directly affects upwelling and downwelling of oceans and some major oceanic currents. This is because if a denser body of water is sitting on top of a less dense body of water, the denser part of the water column will turn over (sink) to get to a more stable water column state. This leads to water mixing of nutrients and oxygen for organisms living in the water column. Typically the saltier the water, the higher the density and also the colder the water, the higher the density. So because of this, cold and salty water (Antarctic and Arctic) are the most dense bodies of water and typically stay towards the bottom of the ocean floor.
What must be true for a population to remain constant over time?
The number of births has to equal the number of deaths for zero population growth (ZPG). This is assuming there are no immigrations/emigrations into/out of the population.
How does the earths water cycle help keep earths water supply relativly constant?
the heat from the sun makes the water evaporate and goes to the air and then turns into water vapor then goes falling into small bodies of water and slides to the ocean and the same process happens over and over again
What level of salinity will plants not grow?
Plants grow in seawater e.g. mangroves. There are other flowering plants that grow in shallow seawater. Seawater is about 3.5 % salt. Water needs to be over 3.5 % salinity before plants cannot grow.
What two properties determine the density of sea water?
Temperature and Salinity. Both are important although temperature has a much greater effect than salinity on seawater density.
What three traits appear at an early age and remain constant over time?
extraversion, neuroticism and psychoticism
Are wages a fixed or variable cost?
wages are variable cost reason being is that wages are being used over and over again and does not remain constant.
Do solutions settle over time?
Recall that solutions are homogeneous mixtures. For example, sodium chloride does not settle out when its solutions remain constant.
Is Observing the change in salinity of water over time independent or dependent?
Observing the change in salinity of water over time can be independent or dependent. This depends on the experiment.
How do you explain the peculiarity on the salinity of sea water and similarly for the hardness of water?
The salinity of seawater is primarily due to the presence of dissolved salts, mainly sodium chloride. This occurs over time as water flows through rivers, picks up minerals from rocks, and eventually reaches the ocean. The hardness of water is caused by the presence of minerals such as calcium and magnesium. These minerals can enter water sources through the dissolution of rocks and soil, contributing to the hardness of the water.
How do temperature and salinity drive ocean current convection and what is the type of ocean current called?
Temperature and salinity drive ocean circulation by altering seawater density. Warm, fresh water is significantly less dense than cold salty water and will therefore rise to the top in the ocean. Any process that alters temperature or salinity (such as rain, sea ice formation or seasonal variation) will change the density of the water and allow it to move in the water column, causing circulation of water on a global scale. This is known as thermohaline circulation. Because things such as rainfall and temperature tend to be relatively constant in a given area over a long period of time, a set current of water known as the global conveyor belt has arisen. It plays an incredibly important role in heat transfer over the earth.
If freshwater and seawater meet at the mouth of a river which one sinks and why?
Seawater is more dense than freshwater. Therefore the seawater would sink lower than the freshwater. Ships do indeed stay higher in seawater because of the higher density or specific gravity of seawater over freshwater
How does the water cycle keep the earth's water supply constant?
earth remain Fly constrant over time though this does not mean that precipitation will increase
Why does the temperature remain constant when it boils?
A substance has different phases, but it only boils at a certain temperature. If it is over that temperature it will evaporate or if it is under that temperature it won't boil.
What is the saltiest natural water body on earth and what is its salinity?
Don Juan Pond in Antarctica is the saltiest natural body of water. Its salinity is over 40%.
