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Convection currents occur in the mantle of the earth. They can affect the crust and the life above it, though.
The Earth's core.
mantle
Convection currents rese and sink through the mantle and the liquid outer core. In Earth's mantle, large amounts of heat are transferred by convection currents. Heat from the core and the mantle itself causes convection currents in the mantle.
The asthenosphere.
The upper mantle contains convection currents that move the tectonic plates.
This layer is the mantle.
Convection currents occur in the mantle of the earth. They can affect the crust and the life above it, though.
Convection currents in the magma drive plate tectonics.Heat generated from the radioactive decay of elements deep in the interior of the Earth creates magma (molten rock) in the aesthenosphere.
In the mantle, there is a fluid-like layer called the asthenosphere which has convection currents, due to the heat of the inner core. Earth's plates are hypothetically "floating" on the asthenosphere. The currents in this layer push whatever is on top of it, thus the continents move.
The Earth's core.
Convection currents in the mantle drive plate movements.
The Earth's core.
The lithosphere is the continental crust, oceanic crust and upper part of the mantle. The convection currents move in the mantle mostly in the Asthenosphere layer under the lithosphere. As the convention currents move it makes the lithosphere spread and shake.
Plates move because of the intense heat in the Earth's core. The heat causes molten rock in the mantle layer to move.
The Earth's core.
Convection currents move in the Mantle.