What is meant by ocean current?
An ocean current is any more or less permanent or continuous, directed movement of ocean water that flows in one of the Earth’s oceans. The currents are generated from the forces acting upon the water like the earth’s rotation, the wind, the temperature and salinity differences and the gravitation of the moon.
Why are there ocean currents?
Ocean currents can be caused by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes or storms. Surface currents in the ocean are driven by global wind systems that are fueled by energy from the sun.
What are ocean currents Class 9?
Ocean currents are streams of water flowing constantly on the ocean’s surface in definite directions. They are caused by differences in the temperature and salinity of water, by wind, solar heating and gravity. The winds majorly responsible for creating ocean currents are the Westerlies and the Trade winds.
What are effects of ocean currents?
Currents affect the Earth’s climate by driving warm water from the Equator and cold water from the poles around the Earth. The warm Gulf Stream, for instance, brings milder winter weather to Bergen, Norway, than to New York, much further south.
What are famous ocean currents?
List of Ocean Currents of the World
|Name of Current
|Nature of Current
|North Equatorial Current
|Hot or Warm
|North Pacific Current
What are the four major ocean currents?
The gyre has a clockwise circular pattern and is formed by four prevailing ocean currents: the North Pacific Current to the north, the California Current to the east, the North Equatorial Current to the south, and the Kuroshio Current to the west.
What are two causes of ocean currents?
The horizontal and vertical circulation of ocean waters are called currents. Major causes of ocean currents include wind friction, gravity, and variation in water density in different parts of the ocean.
What are some examples of ocean currents?
Indian Ocean Agulhas Current East Madagascar Current Equatorial Counter Current Indonesian Through-flow Leeuwin Current Madagascar Current Mozambique Current Somali Current South Australian Counter Current South Equatorial Current
What are the causes and effects of ocean currents?
Major causes of ocean currents include wind friction, gravity, and variation in water density in different parts of the ocean. Surface ocean currents are mainly caused by wind. The winds that most affect the oceans’ currents are: The Westerlies (40-50 degree latitudes) blow west to east.