The figure below shows the formation and sinking of dense water in the Arctic Ocean between Greenland and northwest Europe. Why
is there an increased density of surface waters in this region? A. Evaporation decreases salinity, and heavy polar air increases atmospheric pressure.
B. Evaporation decreases salinity, and cool atmospheric temperatures decrease water temperature.
C. Formation of sea ice increases salinity, and heavy polar air increases atmospheric pressure.
D. Formation of sea ice increases salinity, and cool atmospheric temperatures decrease water temperature.
Answer: The correct option is A. Evaporation decreases salinity, and heavy polar air increases atmospheric pressure.
The ocean circulation conveyor belt or the thermohaline circulation of sea water that circulates massive water currents from northern to southern oceans and again back. The warm water on releasing heat becomes denser and sinks down. This closed circulation loop makes the cold water move towards the tropical region at the deeper levels.
The decrease in salinity results due to evaporation. The density of sea water depends on pressure, temperature and salinity. Density increases when temperature decreases and salinity increases. The wind field pattern is formed from the warm ascending air from the low atmospheric pressure in tropical region and high atmospheric pressure from the cool descending air in subtropical region.
In the Arctic region dense sinking surface water is counteracted by the release of fresh water due to melting of ice and a high atmospheric pressure. The low temperature in the polar region makes the air heavy and is forced to descend which causes high pressure zone.
During mitosis the chromosomes are being duplicated. which means the chromosomes that are formed during the mitosis is identical to its parents. during the mitosis, the cell udergoes 4 phases. prophase, metaphase, anaphase and lastly the telophase
Descripción Las variables dependientes e independientes son variables en modelos matemáticos, modelos estadísticos y ciencias experimentales. Las variables independientes son entradas controladas. Las variables dependientes representan la salida o el resultado resultante de alterar estas entradas.
Water molecules have covalent bonds. Each molecule consists of two hydrogen and oxygen covalent bonds. However, when water molecules are placed together, as they are normally, the hydrogen atoms in each molecule can form hydrogen bonds with the oxygen atom of other molecules.
