Convection currents.
aliens
Convection currents.
A fault
A sudden movement of the Earth's crust is called an earthquake.
plates
moho barrier?
The earth's crust moves because the earth has tectonic plates that move because the magma under the earth's surface is constantly boiling. Since the water moves, it causes the earth's crust to move.
The Earth's surface will change its shape and form.
earth's crust is broken in 12 pieces that constantly moves
A sudden shift of the earth's crust along a fault could result in an earthquake.
An earthquake moves due to the plates under the Earth's crust moving
tectonic plates shifting. One moves under another and this causes the growth of new crust