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प्रश्न
How do winds give direction to the ocean currents?
उत्तर
Ocean currents are mainly caused by the temperature, salinity and density of ocean water as well as planetary winds. Regularly flowing planetary winds have friction with the ocean surface. They carry water forward with them. Due to this, the ocean water gets a specific direction and speed. This causes ocean currents. Almost all ocean currents in the ocean flow in the direction of the planetary winds. Their direction of flow can change due to the shape of the coastline.
If there are winds that blow in the same direction throughout the year in a region, it affects the movement of ocean water. In the Northern Hemisphere, easterly winds blow from the northeast to the southwest between 0° and 30° north latitude. While in the Southern Hemisphere, they blow from the southeast to the northwest between 0° and 13° south latitude. Therefore, in the equatorial region, the movement of ocean water is from east to west. Due to the rotation of the Earth, the cycle of ocean currents in the Northern Hemisphere starts in an anticlockwise direction. This is how ocean currents get their direction.
संबंधित प्रश्न
Which of the following occurs in the area where the cold and warm currents meet?
What is meant by the ‘salinity’ of ocean water?
State the relationship between temperature and density of ocean water.
How do evaporation and precipitation cause movement of ocean water?
Name the factors originating within the sea which cause ocean currents.
Give reasons for the following:
The eastern coasts of the USA are comparatively cold.
Give reasons for the following:
The waters of the Oyashio Current form the richest fishing grounds in the world.
Give reasons for the following:
There is heavy rainfall in Queensland but the Atacama desert is arid.
Describe the circulation pattern of the following ocean current.
Labrador Current of the Atlantic Ocean.
Long Answer Type Question:
Give an account of ocean currents.
