Plate Tectonics

Tectonic Plates are made of this:

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

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

The main argument against the Continental Drift Theory was:

Convection Currents are found in this layer:

Trenchs are found at this type of boundary:

Rift Valleys are found at this type of boundary:

This part of the Upper Mantle contains convection currents:

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

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

which is not a type of plate boundary (where two plates meet):

This layer is least dense:

This is the outermost layer of the Earth:

This layer is most dense:

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

Which one was not a piece of evidence used to support the Continental Drift Hypothesis was:

This is the inner-most layer of the Earth:

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

This layer is made of liquid Iron and Nickel:

This type of crust is least dense and thickest:

The Earth has this many layers:

The Mid-Atlantic Ridge is this type of boudary:

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

This type of crust is the most dense and thinnest:

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

The Continental Drift Hypothesis was first proposed by: