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Geologists believe that covection currents are what causes continental drift. If covection currents never happened and their force didnt move the continents then we'd all live on one large super continent.

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15y ago
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11y ago

In a convection current, the particles nearest to the heat gain thermal energy, so start to vibrate more and move slightly further apart from one another, therefore becoming less dense and rising. Once these particle get further away from the heat source, they begin to cool down, so the the particles vibrate less and get closer together. This means that they become more dense and sink back down towards the heat sorce, where once again they are heated and the process starts all over again. A convection current can only happen in a liquid or a gas.

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Q: Why are covection currents needed?
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Related questions

What happens if the convection currents heat is removoed?

um it is the covection moving


What geological events occur because of covection currents in earths mantle?

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Which layer of the Earth do Covection Currents occur in?

The major ones involve the mantle and the oceanic crust.


What are covection currents and what causes them?

A convection current is how either water or air cools and heats. The thing that causes them is the heating and cooling of air or water which makes it rise or sink.


How are global winds and local winds similar?

They both have covection currents and effect the weather


What happens to covection currents when a fluid reaches a constant temperature?

As the fluid warms:The currents speed upThen as the temperatures of the fluid equalise (the fluid becomes one temp) the currents slow downWhen the fluid is one temperature the currents stop


What effect do covection currents and volcanic activity have on earth's surface?

When a part of the earth's upper mantle or lower crust melts, magma forms. A volcano is essentially an opening or a vent through which this magma and the dissolved gases it contains are discharged.


What weather conditions in nature are needed for salinity currents to form?

Wave action, Volcanic activity and land and water erosion are needed to have salinity currents form. Hope this helped@ :)


What causes covection currents?

Well, i don't know what causes them but i do know how they form.Convection currents are formed somewhere in the upper mantle below the asthenosphere and is called the mesosphere.the mantle material,(the hotter material) rises on the surface of the asthenosphere,and pushes the cooler material out of the way,sinking back into the Earth becoming more and less dense each time. Hope this helped! :)


What provides the energy needed to create winds in the atmosphere and currents in the oceans?

The sun is the original source of energy for such winds and currents.


The transfer of heat by circulation or movement of gases?

covection


The transfer of heat by the movement of particles in fluids is called?

its covection