Plate Tectonics

One piece of evidence used to support the Continental Drift Theory was:

This is the outermost layer of the Earth:

The Ring of Fire consist of what type of plate boundary?

This type of crust is the most dense and thinnest:

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

This part of the Upper Mantle contains convection currents:

The arguments against the Continental Drift Theory were:

When a plate descends or drops into the mantle, it is known as this:

This type of crust is least dense and thickest:

This layer is made of liquid Iron and Nickel:

Trenchs are found at this type of boundary:

The Mid-Atlantic Ridge is this type of boudary:

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

This is the inner-most layer of the Earth:

What process produces the magma for most volcanoes?

The Earth has this many main layers:

Convection Currents are found in this layer:

This is a type of plate boundary (where two plates meet):

The Continental Drift Theory was first proposed by:

Rift Valleys are found at this type of boundary:

This layer is most dense:

What ocean does the Ring of Fire surround?

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

This layer is least dense:

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

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

Tectonic Plates are made of this:

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

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