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प्रश्न
Give reason.
Oceans located at the same latitude do not have same salinity.
थोडक्यात उत्तर
उत्तर
- The salinity of the oceans depends on factors like the rate of evaporation and the supply of fresh water.
- In oceans where the rate of evaporation is greater than the supply of fresh water, the salinity is higher.
- In oceans where the supply of freshwater exceeds the rate of evaporation, salinity is low.
- Salinity is not affected much in areas where the supply of fresh water and the evaporation of water are low.
- Thus, oceans located at the same latitude do not have the same salinity.
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Properties of Sea Water - Salinity of the Sea Water
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संबंधित प्रश्न
Tick the correct box according to the salinity of the ocean water ✓.
- Slanting sunrays, melting snow.
- Cloudy sky, rainfall throughout the year.
- Clear skies for the most part, perpendicular sunrays.
- Less supply of freshwater, desert area around.
- Low temperatures, ample supply of river water.
- Continental location, desert around, low rainfall.
Give reason.
Salinity is low in the land-locked Baltic Sea.
Give reason.
Salinity increases in the mid-latitudinal zones.
What are the factors affecting the salinity of the sea water?
Explain how temperature affects the following.
The salinity of sea water
Complete the table showing the salinity of open and land-locked seas.
Evaporation of water | Supply of freshwater | |||||
Region | Latitude | Solar energy | Rainfall | River water | Snow water | Average salinity |
Equatorial | 0° to 15° | High | Perennial | High | ________ | 34‰ |
Tropical | 15° to 35° | __________ | Seasonal | ________ | ________ | 37‰ |
Temperature | 35° to 65° | Low | ___________ | ________ | ________ | 33‰ |
Polar | 65° to 90° | __________ | ___________ | Low | ample | 31‰ |
Landlocked sea | Solar energy | Rainfall | River water | Snow water | Average salinity | |
Mediterranean Sea | High | Low | Low | _______ | 39‰ | |
Red Sea | _______ | _______ | _______ | _______ | 41‰ | |
Baltic Sea | Low | _______ | Medium | _______ | 7‰ | |
Dead Sea | _______ | Very low | Very less | _______ | 332‰ | |
Caspian Sea | _______ | ______ | ______ | ______ | 155‰ | |
Great Salt lake | medium | ______ | ______ | ______ | 220‰ |