I believe it is pressure building inside that is pushing it outwards Plate tectonics is the movement of the earth's crust over the Mantle. Very similar to the way the thin chocolate coating of a choc ice slides over the melting ice cream. Sometimes the plates collide and one dives under the other. This is called plate subduction. Sometimes they move in opposite directions and new sea floor wells up from below to seal the gap. This is called sea floor spreading. If the plates moves sideways against each other the sudden movement causes earthquakes as the two forces suddenly equalise.
Stress.
There are internal stresses caused by the shifting of the tectonic plates and the stress of gravitational forces of the sun and moon.
plate tectonics?
Stress forces squeeze or pull the rock in the Earth's crust.
A mega earthquake is seismic activity below the earths crust that causes fluctuations in the earths tectonic plates. This forces the ground to shake and the earths crust to crack.
Crustal deformation. That is, when pieces of the Earth's crust change shape due to tectonic forces.
Landforms formed by forces pushing up earth's crust are called upwarped mountains. Examples of these are the Black Hills and the Southern Rocky Mountains.
orogeny and epeirogeny
Deformation
It causes it to deform - this deformation is called "strain".
Tectonism, or diastrophism, is the term that refers to the deformation of Earth's crust. Plate tectonics is just the theory.
Stress forces squeeze or pull the rock in the Earth's crust.
The movement in earths plates create powerful forces that pull or squeeze the rock in the crust.
A mega earthquake is seismic activity below the earths crust that causes fluctuations in the earths tectonic plates. This forces the ground to shake and the earths crust to crack.
Umm, I think the crust.
Plate tectonics
the mantel of earths crust will break causing an eartqake
A break in the earths crust is called 1.) deformation 2.) boundry 3.) rebound 4.) fault I'll give you a hint. "It was not my _______ !!" "I did not break the lamp!!"
Isostasy
convection currents in the upper mantle