Two plates grind past each other at a _____.

The center layer of the Earth is the ____.

Mountain chains are formed when two continental plates interact at a ____.

The process of a continent, breaking apart is called ___.

The evidence used to support the continental drift theory, did NOT include:

The layer of plastic rock that underlines the tectonic plates is the ______.

Convection occurs because he did material becomes ___.

Approximately 200 million years ago, all the continents were together as a single, supercontinent called _____.

The _____ is the thinnest layer of the earth.

The ____ was/were formed when the Indian subcontinent crashed into the Asian continent approximately 50 million years ago.

The regional long tectonic plate boundaries were one plate moves beneath another is called a _____.

The ___ is the only liquid layer on earth.

A ____ is a long, undersea mountain chain with steep, narrow valley as its center.

The ____ is a series of volcanoes that in circle the Pacific Ocean.

The inner core is primarily made of solid, ____ and ____.

The _____ of the Earth is further broken into two subregions, the lithosphere and asthenosphere.

The scientist _____ proposed that continents move around the Earth.

New ocean floor is constantly being produced through a process, known as ____.

The single, large ocean that surrounded the world 200 million years ago, was called ____.

Continents grow in size when a convergent boundary causes a ___ to run into a continent.