How Are Surface Currents Created

Contents

How Are Surface Currents Created?

Surface currents are created by three things: global wind patterns the rotation of the Earth and the shape of the ocean basins. Surface currents are extremely important because they distribute heat around the planet and are a major factor influencing climate around the globe.Surface currents are created by three things: global wind patterns the rotation of the Earth

rotation of the Earth
Earth’s rotation or Earth’s spin is the rotation of planet Earth around its own axis as well as changes in the orientation of the rotation axis in space. … Earth rotates once in about 24 hours with respect to the Sun but once every 23 hours 56 minutes and 4 seconds with respect to other distant stars (see below).

What are 3 causes of surface 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.

How a surface current is created in the ocean?

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.

See also what currents are a result of the movement of the sun and the moon

What 4 factors create surface currents?

The different types of currents (referred to as surface or thermohaline depending on their depth) are created by among other things wind water density the topography of the ocean floor and the coriolis effect.

How are deep currents created?

In contrast to wind-driven surface currents deep-ocean currents are caused by differences in water density. … The water cools as it moves into higher northern latitudes and the more it cools the denser it becomes. In the North Atlantic Ocean near Iceland the water becomes so cold that sea ice starts to form.

What are surface currents?

A current is a stream of moving water that flows through the ocean. Surface currents are caused mainly by winds but not daily winds. Surface currents are caused by the major wind belts. … So they can keep water moving in the same direction.

What is the immediate source of surface currents?

the immediate source of most of the energy for ocean currents is: wind.

What produces surface currents in the ocean quizlet?

What causes surface currents to move? It is caused by wind action Earth’s spin and the shape of the continents. Also the speed direction and volume of water can be affected by the uneven heating of the atmosphere. The force of wind blowing over the top of the Earth.

What are the causes of 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 is the most common source of energy for surface currents?

Large-scale surface ocean currents are driven by global wind systems that are fueled by energy from the sun. These currents transfer heat from the tropics to the polar regions influencing local and global climate.

How do the causes of surface and deepwater currents differ?

How do the causes of surface and deepwater currents differ? Surface currents are caused by wind deepwater currents are caused by differences in water density. Wind and ocean currents do not move in straight lines instead they curve as they move across the planet.

Which surface currents are formed by the trade winds?

Between 30-60o latitude the westerlies form eastward flowing surface currents (PW map by Catrin (Own work Using GMT) [CC BY-SA 3.0] via Wikimedia Commons). The trade winds create the equatorial currents that flow east to west along the equator the North Equatorial and South Equatorial currents.

What are characteristics of surface currents?

Surface ocean currents form large circular patterns called gyres. Gyres flow clockwise in Northern Hemisphere oceans and counterclockwise in Southern Hemisphere oceans because of the Coriolis Effect. creating surface ocean currents. Near the Earth’s poles gyres tend to flow in the opposite direction.

What is the difference between surface and deep currents?

Surface currents are driven by global wind systems that are fueled by energy from the sun. … Deep currents also known as thermohaline circulation result from differences in water density. These currents occur when cold dense water at the poles sinks.

What are deep currents and how do they originate?

Cooler water is more dense so it begins to sink. As a result the surface currents and the deep currents are linked. Wind causes surface currents to transport water around the oceans while density differences cause deep currents to return that water back around the globe (Figure 14.17).

What causes convection currents to form in the ocean?

The sun causes uneven heating which leads to differences in air pressure. This causes wind which moves the water at the surface of the ocean. … Uneven heating causes density differences in the water which causes convection currents.

What is an example of a surface current?

Two examples are the California Current (Cal) in the Pacific ocean basin and the Canary Current (Can) in the Atlantic ocean basin. The North Equatorial Current (NE) and the South Equatorial Current (SE) flow in the same direction. The SE turns south and behaves the opposite of the gyres in the Northern Hemisphere.

See also what countries were not involved in world war 2

What is surface current physics?

Surface current is a current flowing in a plane and has units of charge per unit time per unit length (measured in the direction in the same plane but perpendicular to the flow direction).

What are the two types of surface currents?

TL DR (Too Long Didn’t Read) Two major kinds of currents define the planet’s oceans: surface currents driven by wind and deep-water currents driven by variations in seawater density.

What is the ultimate source of energy for surface currents quizlet?

The Sun is the ultimate source of energy for both circulation systems. Describe the different ways in which surface currents are measured.

How do ocean surface currents 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. … The ocean doesn’t just store solar radiation it also helps to distribute heat around the globe.

Where do cold ocean currents generally come from?

The cold currents often form when the air on the subtropical high blows over a cold mass of water then the cold air is dragged to the equator. Warm currents on the other hand are large masses of warm water moving further away from the equator at higher temperatures.

Where do surface currents develop?

Surface currents are created by three things: global wind patterns the rotation of the Earth and the shape of the ocean basins. Surface currents are extremely important because they distribute heat around the planet and are a major factor influencing climate around the globe.

How are surface currents formed quizlet?

Surface currents occur at the surface of the ocean and are caused by global winds the Gulf Stream is an example. Deep currents occur deep in the ocean and are influenced by water density salinity and temperature. … Winds and currents flow faster at the equator than at the poles.

What is the primary cause of surface currents in the ocean quizlet?

1. Wind is the primary driving force of surface currents. The Coriolis effect deflects the currents to the right (Northern Hemisphere) or left (Southern Hemisphere) of their path of motion (the prevailing wind direction). The location of the continents also affects the pattern of surface currents.

What are the causes of current in geography?

i. Prevailing winds: Prevailing winds influence the ocean currents more than any other single factor. These winds blow in a particular direction and drag the surface water due to the force of friction. This leads to the formation of ocean currents.

What are tides and how are they caused?

Tides are very long waves that move across the oceans. They are caused by the gravitational forces exerted on the earth by the moon and to a lesser extent the sun. When the highest point in the wave or the crest reaches a coast the coast experiences a high tide.

See also how are the rocky mountains and the appalachian mountains different

How are tides caused?

The moon’s gravity pulls the ocean toward it during high high tides. During low high tides the Earth itself is pulled slightly toward the moon creating high tides on the opposite side of the planet. Earth’s rotation and the gravitational pull of the sun and moon create tides on our planet.

What is the ultimate source of energy for surface currents?

1. The Sun is the ultimate source of energy that brings about the surface circula- tion of the ocean.

What is the most common source of energy?

The world’s most used energy sources
  • Oil – 39% Accounting for approximately 39% of the global energy consumption oil has historically been the world’s most used energy source. …
  • Gas – 22% Gas consumption grew at an average rate of 2.4% in the last ten years. …
  • Nuclear energy – 4.4%

Where are short distance surface current located?

Short distance surface current that tends to flow parallel to the shoreline. Powerful narrow flow of water back out to sea strong undertow. Current that flows near the oceans surface for short distances.

What are 2 ways surface currents are different from thermohaline currents?

Surface ocean currents are primarily driven by winds. Deep ocean currents on the other hand are mainly a result of density differences. The thermohaline circulation often referred to as the ocean’s “conveyor belt” links major surface and deep water currents in the Atlantic Indian Pacific and Southern Oceans.

What alters the density of Earth’s ocean?

There are two main factors that make ocean water more or less dense than about 1027 kg/m3: the temperature of the water and the salinity of the water. Ocean water gets more dense as temperature goes down. So the colder the water the more dense it is. Increasing salinity also increases the density of sea water.

How does the global conveyor belt differ from surface currents?

The global conveyor belt is a system of ocean currents that transport water around the world. While wind primarily propels surface currents deep currents are driven by differences in water densities in a process called thermohaline circulation.

How do ocean currents work? – Jennifer Verduin

Surface Currents

What are Surface Ocean Currents? What are Deep Ocean Currents? What is the Coriolis Effect?

Ocean Surface Currents | Ocean Currents Part 2

Leave a Comment