The Earth's surface will change its shape and form.
erosion
The sudden movement could result in an earthquake.
The surface of the earth moves violently in an earthquake. This occurs when there is a sudden release of energy in the earths crust. Anything from a volcano to a tectonic plate shift can cause an earthquake.
Those would be tectonic plates.
The earths crust is moved rather than pulled by things called convection currents. This is when heated rock from the earths core rises up and reaches the crust where it cools. It then sinks down again and carries on in a circle which moves the crust
Plate
magma moves up earth suface
it is the movement of the earths crust. it moves inwards towards other plates so the earths crust moves upwards therefore forming mountains, volcanoes etc
the tectonic plates under the earths surface
In a subduction zone, an oceanic plate moves under another plate (whether continental or oceanic). Sometimes pressure builds up, and earthquakes occur.
That's when we have a lunar eclipse.
A sudden movement of the Earth's crust is called an earthquake.