What Is A Wind Current

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What does wind current mean?

a wind current: a flow of air.

What is wind current short answer?

Wind current is the air that moves in a river like flow in a particular direction. In which thermal updrafts are mild currents due to warm air rising. Wind currents are produced due to the non-uniform heating of the Earth. That means uneven heating at the equator and the poles.

What is an example of wind currents?

Winds also help drive ocean surface currents around the world. The Antarctic Circumpolar Current transports cold nutrient-rich water around Antarctica. The Gulf Stream brings warm water from the Gulf of Mexico up the East Coast of North America and across the Atlantic to Northern Europe.

What is the cause of wind current?

Wind currents are generated due to uneven heating of the Earth: a. Uneven heating of the equator and the poles: … This warm air rises and the cooler air from the regions in the 0-30 degrees latitude belt on either side of the equator moves in.

What is the difference between wind and air current?

Air that moves horizontally along the earth’s surface is called wind. The temperature and humidity varies in the wind system. Air current: The vertical or nearly vertical movement of air is referred to as air current.

What is the air current called?

Air Currents

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Moving air is called wind. Air currents are winds that move in a riverlike flow in a certain direction.

What causes wind currents explain Class 7?

Wind currents occur due to: Uneven heating between the regions near the equator and the poles and the rotation of the earth. Uneven heating of land and water in coastal areas.

What causes wind currents across the globe?

Answer: The wind is caused by differences in atmospheric pressure. When a difference in atmospheric pressure exists air moves from the higher to the lower pressure area resulting in winds of various speeds. On a rotating planet air will also be deflected by the Coriolis effect except exactly on the equator.

What are the effects of wind currents?

Prevailing winds bring air from one type of climate to another. For example warm winds that travel over water tend to collect moisture as they travel the water vapor in the air will condense as it moves into colder climates which is why temperate coastal areas often receive heavy rainfall.

How many wind currents are there?

The four major wind systems are the Polar and Tropical Easterlies the Prevailing Westerlies and the Intertropical Convergence Zone. These are also wind belts. There are three other types of wind belts also. They are called Trade Winds Doldrums and Horse Latitudes.

What are the 3 types of winds?

The three chief types of winds are Trade winds Westerlies and polar winds.

What is a wind driven current called?

Wind driven circulation describes the process in which winds moving along the surface of the ocean push the water in their direction and create currents near the surface. … There are many large circulating patterns in the open ocean driven by the Coriolis Effect. These ciruclating patterns are called gyres.

What are the 4 types of wind?

Types of Wind – Planetary Trade Westerlies Periodic & Local Winds.

Why is there an uneven heating of the earth?

Solar heating of the Earth’s surface is uneven because land heats faster than water and this causes air to warm expand and rise over land while it cools and sinks over the cooler water surfaces. … This differential heating is passed on to the air above by conduction which causes air expansion and changes in pressure.

How do wind blows?

The Short Answer: Gases move from high-pressure areas to low-pressure areas. And the bigger the difference between the pressures the faster the air will move from the high to the low pressure. That rush of air is the wind we experience.

What makes a current?

Currents are cohesive streams of seawater that circulate through the ocean. … Currents may also be caused by density differences in water masses due to temperature (thermo) and salinity (haline) variations via a process known as thermohaline circulation.

What is upper air current?

Jet streams are currents of air high above the Earth. They move eastward at altitudes of about 8 to 15 kilometers (5 to 9 miles). They form where large temperature differences exist in the atmosphere. An air current is a flowing movement of air within a larger body of air.

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Where are the trade winds?

The trade winds can be found about 30 degrees north and south of the equator. Right at the equator there is almost no wind at all—an area sometimes called the doldrums.

What is wind currents and ocean currents?

The winds pull surface water with them creating currents. As these currents flow westward the Coriolis effect—a force that results from the rotation of the Earth—deflects them. … In contrast to wind-driven surface currents deep-ocean currents are caused by differences in water density.

How do you describe currents?

The term “current” describes the motion of the ocean.

Ocean currents are driven by wind water density differences and tides. … Currents are generally measured in meters per second or in knots (1 knot = 1.85 kilometers per hour or 1.15 miles per hour).

What is meant by water current?

Water current is the rate of movement in the water and ways to describe water current include its speed and direction.

What is wind class 7 short answer?

Moving air is called Wind. Since air is a mixture of gases wind is the flow of gases on a large scale. Winds are caused by heating difference between different parts of the world and the movement of the earth.

How are winds named?

A wind is always named according to the direction from which it blows. For example a wind blowing from west to east is a west wind. … This flow of air is wind. The difference in air pressure between two adjacent air masses over a horizontal distance is called the pressure gradient force.

How wind is formed short answer?

Wind is air in motion. Wind forms when the sun heats one part of the atmosphere differently than another part. This causes expansion of warmer air making less pressure where it is warm than where it is cooler. Air always moves from high pressure to lower pressure and this movement of air is wind.

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.

How do currents affect weather?

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.

What deflects the direction of the wind?

What is the Coriolis effect? The Earth’s rotation means that we experience an apparent force known as the Coriolis force. This deflects the direction of the wind to the right in the northern hemisphere and to the left in the southern hemisphere.

Why is wind important to humans?

It’s a clean fuel source.

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Wind energy doesn’t pollute the air like power plants that rely on combustion of fossil fuels such as coal or natural gas which emit particulate matter nitrogen oxides and sulfur dioxide—causing human health problems and economic damages.

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.

Why is there no wind on the equator?

There’s science behind it.

The effects of the Doldrums are caused by solar radiation from the sun as sunlight beams down directly on area around the equator. This heating causes the air to warm and rise straight up rather than blow horizontally. The result is little or no wind sometimes for weeks on end.

What are the major wind currents?

Water in the surface currents is pushed in the direction of the major wind belts:
  • trade winds: east to west between the equator and 30oN and 30oS.
  • westerlies: west to east in the middle latitudes.
  • polar easterlies: east to west between 50o and 60o north and south of the equator and the north and south pole.

What is variable wind?

Variable winds are those winds which blow in a small area and are related to the pressure systems. They are known as variable winds as they do not blow in a definite direction and their speed and velocity varies with the pressure system. Two main kinds of variable winds are cyclones and anti-cyclones.

What is wind explain the type of wind?

Wind can be described as the movement of air from the high-pressure area to the low-pressure area. There are many types of wind such as permanent seasonal and local winds. A wind is named after the direction from which it blows e.g. the wind blowing from the west is called westerly.

What is the secondary wind?

Secondary Winds are also known as Seasonal Winds or Periodic Winds. They are confined to a particular area and to a particular season. They change their direction with season. … The best example of seasonal winds or secondary winds is Monsoonal Wind system in Indian ocean.

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