GEOLOGY

Detailed explanation-1: -Magma is the molten rock below the crust, in the mantle. Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth’s crust.

Detailed explanation-2: -Plate Tectonics The Earth’s crust is broken up into a series of massive sections called plates. These tectonic plates rest upon the convecting mantle, which causes them to move.

Detailed explanation-3: -Convection currents generated within the asthenosphere push magma upward through volcanic vents and spreading centres to create new crust. Convection currents also stress the lithosphere above, and the cracking that often results manifests as earthquakes.

Detailed explanation-4: -Heat from the core and the mantle itself causes convection currents in the mantle. Hot columns of mantle material rise slowly. At the top of the asthenosphere, the hot material spreads out and pushes the cooler material out of the way.

Detailed explanation-5: -The common, simplified explanation for why tectonic plates are moving is that they’re carried along on currents in the upper mantle, the slowly flowing layer of rock just below the Earth’s crust. Converging currents drive plates into each other. Diverging currents pull them apart.