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The average salinity of the oceans is
- a)45 parts per thousand
- b)35 parts per thousand
- c)55 parts per thousand
- d)65 parts per thousand
Correct answer is option 'B'. Can you explain this answer?
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The average salinity of the oceans isa)45 parts per thousandb)35 parts...
35 parts per thousand
Seawater is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of approximately 3.5%, or 35 parts per thousand. This means that for every 1 litre (1000 mL) of seawater there are 35 grams of salts (mostly, but not entirely, sodium chloride) dissolved in it.
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The average salinity of the oceans isa)45 parts per thousandb)35 parts...
Average Salinity of Oceans
The average salinity of the oceans refers to the amount of salt present in the seawater. The salt content is measured in parts per thousand (ppt). The average salinity of the oceans is determined by various factors such as evaporation, precipitation, runoff, and wind-driven circulation. The correct option for the average salinity of the oceans is B.
Factors affecting the Salinity of Oceans
Evaporation: When water evaporates from the ocean surface, it leaves behind the salt, thus increasing the salinity of the water.
Precipitation: When it rains, freshwater is added to the ocean, which dilutes the salt content, thus decreasing the salinity of the water.
Runoff: The freshwater from rivers and streams that flows into the oceans also dilutes the salt content, thus decreasing the salinity of the water.
Wind-driven circulation: The ocean currents driven by wind also affect the salinity of the water. In regions where the currents are strong, the water mixes, thus decreasing the salinity. In regions where the currents are weak, the water has a higher salinity.
Conclusion
The average salinity of the oceans is 35 parts per thousand (ppt). This means that for every 1000 grams of seawater, 35 grams are salt. The salinity of the oceans affects many aspects of the marine ecosystem, including the distribution of marine life, ocean currents, and climate. Understanding the salinity of the oceans is essential for the management and conservation of marine resources.
The average salinity of the oceans refers to the amount of salt present in the seawater. The salt content is measured in parts per thousand (ppt). The average salinity of the oceans is determined by various factors such as evaporation, precipitation, runoff, and wind-driven circulation. The correct option for the average salinity of the oceans is B.
Factors affecting the Salinity of Oceans
Evaporation: When water evaporates from the ocean surface, it leaves behind the salt, thus increasing the salinity of the water.
Precipitation: When it rains, freshwater is added to the ocean, which dilutes the salt content, thus decreasing the salinity of the water.
Runoff: The freshwater from rivers and streams that flows into the oceans also dilutes the salt content, thus decreasing the salinity of the water.
Wind-driven circulation: The ocean currents driven by wind also affect the salinity of the water. In regions where the currents are strong, the water mixes, thus decreasing the salinity. In regions where the currents are weak, the water has a higher salinity.
Conclusion
The average salinity of the oceans is 35 parts per thousand (ppt). This means that for every 1000 grams of seawater, 35 grams are salt. The salinity of the oceans affects many aspects of the marine ecosystem, including the distribution of marine life, ocean currents, and climate. Understanding the salinity of the oceans is essential for the management and conservation of marine resources.
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The average salinity of the oceans isa)45 parts per thousandb)35 parts per thousandc)55 parts per thousandd)65 parts per thousandCorrect answer is option 'B'. Can you explain this answer?
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