____________ are sudden,violent shaking of the Earth's surface.

When the molten material is ejected at the earth's surface through a volcano or crack at the surface,it is called ____________.

A ________ is an opening in the Earth's crust.

__________ occur where two plates slide horizontally past each other.

Two plates moving along side each other is called ___________.

___________ boundaries are also known as divergent boundary.

__________ refers to molten materials inside the earth's interior.

The ___________ is semi-molten.

The crust is a solid and is divided into __________ main types.

_____________ crust is mostly formed of granite.