It happens in the mantle. The middle layer of the Earth. The mantle's fluid or magma rises from the Earth's core. It becomes less dense. It travels away from the core cause of the tremendous heat and pressure. Once it cools off it cones back down. When it starts to heat back up again then it rises back up. It goes in a circular motion. That's convection current.
covection?
covection of the atom
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.
Conduction, convection ,radiations are three methods of heat transfer. Conduction is carried out by direct contact with materials covection & radiation are carried out without any contact with the material
Convection currents are caused by differences in density. Warmer fluid is less dense, so a fixed volume of the warmer fluid is lighter. Colder fluid is denser, and so heavier in a fixed volume. The colder, denser fluid presses down and falls below the less dense fluid, which floats up to the top of the fluid. Often, there is a heat source that the bottom of the container, so the fluid at the bottom, which was more dense, warms up and becomes less dense. At the same time, the fluid at the top cools down and becomes more dense, and so the cycle repeats, forming a convection current.
its covection
its covection
I need to know the same thing
covection of the atom
The major ones involve the mantle and the oceanic crust.
i think it is about 2 hours i think it is about 2 hours
covection?
covection of the atom
The sun moves through the electromagnetic waves. Conduction and Convection transfers energy between differences in density.
I assume you mean "convection". The hotter liquid or gas is less dense, so it has less weight per unit volume, and it tends to float (move upward).
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.
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.