Duplicate of Plate Tectonics

This type of crust is the most dense and thinnest:

Tectonic Plates are made of this:

Mountain Ranges like the Himalayas (Mt. Everest) are made at this type of boundary:

This layer is most dense:

This type of crust is least dense and thickest:

This is the outermost layer of the Earth:

Convection Currents are found in this layer:

When two plates are moving toward each other, it is this type of boundary:

The Earth has this many layers:

The arguments against the Continental Drift Hypothesis were:

The Continental Drift Hypothesis was first proposed by:

The idea that the continents are drifting around on Earth's surface was first called the:

The Mid-Atlantic Ridge is this type of boudary:

This location sits on a hot spot:

This is the inner-most layer of the Earth:

This layer is least dense:

This part of the upper mantle combines with the crust to make the:

This layer is made of liquid Iron and Nickel:

Trenchs are found at this type of boundary:

True or False:  The United States is currently moving West.

Wegener proposed that the continents were once joined in a large land mass called:

Rift Valleys are found at this type of boundary:

Two plates sliding past each other (like in California) is this type of boundary: