There are ___________ large plates in earth.

_____________ crust is mostly formed of granite.

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

____________ is the one of the most tectonically active countries in the world.

The core is divided into __________.

___________ boundaries are also known as divergent boundary.

Two plates moving along side each other is called ___________.

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

__________ occur where two plates slide horizontally past each other.

The ___________ is semi-molten.