Question: What Is The Main Cause Of Ocean Currents?

What causes ocean currents quizlet?

ocean currents that occur at or near the surface of the ocean, caused by wind.

affected by 3 factors; continental deflections, the coriolis effect, and global winds.

when surface currents meet continents, the currents are deflected and change direction.

they form from where the density of ocean water increases…

What are the 5 major ocean currents?

There are five main gyres: the North and South Pacific Subtropical Gyres, the North and South Atlantic Subtropical Gyres, and the Indian Ocean Subtropical Gyre.

What happens if the ocean currents stop?

If ocean currents were to stop, climate could change quite significantly, particularly in Europe and countries in the North Atlantic. In these countries, temperatures would drop, affecting humans as well as plants and animals. In turn, economies could also be affected, particularly those that involve agriculture.

Which ocean currents are warm?

Warm ocean currents flow away from the equatorial region on the western side of ocean basins. The Gulf Stream in the North Atlantic and the Kuroshio Current in the North Pacific are examples of warm currents.

Why is ocean water salty?

Salt in the sea, or ocean salinity, is mainly caused by rain washing mineral ions from the land into water. Carbon dioxide in the air dissolves into rainwater, making it slightly acidic. When rain falls, it weathers rocks, releasing mineral salts that separate into ions.

What is the main cause for deep ocean currents?

Deep ocean currents (also known as Thermohaline Circulation) are caused by: … The sinking and transport of large masses of cool water gives rise to the thermohaline circulation, which is driven by density gradients due to variations in temperature and salinity.

What are 3 factors that affect ocean currents?

Surface currents are controlled by three factors: global winds, the Coriolis effect, and continental deflections. surface create surface currents in the ocean. Different winds cause currents to flow in different directions. objects from a straight path due to the Earth’s rotation.

What are the two main factors that affect deep ocean currents?

Deep ocean currents are density-driven and differ from surface currents in scale, speed, and energy. Water density is affected by the temperature, salinity (saltiness), and depth of the water. The colder and saltier the ocean water, the denser it is.

What are the two main reasons for the development of 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. Currents are cohesive streams of seawater that circulate through the ocean.

What are the 3 major ocean currents?

What are the names of the major ocean currents in the world?Ocean CurrentDescriptionNorth Equatorial CurrentEast-to-west flowing current from 10°-20°N in the Pacific and Atlantic OceanNorth Equatorial Counter Current (NECC)West-to-east flowing current from 3°-10°N in the Atlantic, Indian Ocean and Pacific Ocean7 more rows•May 17, 2020

Where are the strongest ocean currents?

Antarctic Circumpolar CurrentThe Antarctic Circumpolar Current is the strongest current system in the world oceans and the only ocean current linking all major oceans: the Atlantic, Indian, and Pacific Oceans.

How do ocean current affect climate?

Ocean currents act as conveyer belts of warm and cold water, sending heat toward the polar regions and helping tropical areas cool off, thus influencing both weather and climate. … Land areas also absorb some sunlight, and the atmosphere helps to retain heat that would otherwise quickly radiate into space after sunset.

What is the fastest ocean current in the world?

the Gulf StreamOff the Atlantic seaboard of the United States, the Gulf Stream flows at a rate nearly 300 times faster than the typical flow of the Amazon River. The velocity of the current is fastest near the surface, with the maximum speed typically about 5.6 miles per hour (nine kilometers per hour).

What are the two main types of ocean currents?

There are two type of Ocean Currents:Surface Currents–Surface Circulation.Deep Water Currents–Thermohaline Circulation.Primary Forces–start the water moving.The primary forces are:Secondary Forces–influence where the currents flow.Solar heating cause water to expand.More items…

What are 5 factors that affect current flow?

There are four factors affecting the origin and flow of Ocean Currents i.e. Rotation and gravitational force of the Earth; Oceanic factors (temperature, salinity, density, pressure gradient and melting of ice); atmospheric factors (atmospheric pressure, winds, rainfall, evaporation and insolation); factors that …

What are three factors that influence currents?

Oceanic currents are driven by three main factors:The rise and fall of the tides. Tides create a current in the oceans, which are strongest near the shore, and in bays and estuaries along the coast. … Wind. Winds drive currents that are at or near the ocean’s surface. … Thermohaline circulation.

What are the factors that affect ocean currents?

Winds, water density, and tides all drive ocean currents. Coastal and sea floor features influence their location, direction, and speed. Earth’s rotation results in the Coriolis effect which also influences ocean currents.

What is the biggest ocean current in the world?

Antarctic Circumpolar CurrentThe Antarctic Circumpolar Current is the only ocean current to circle the planet and the largest wind-driven current on Earth.