Plate Tectonics

At what kind of location does a mantle plume of magma reach the Earth's surface to form a island chain? (like Hawaii)

Convection Currents are found in this layer:

How do convergent boundaries add material to Earth's surface?

Mountain Ranges like the Himalayas (Mt. Everest) are made at what kind of plate boundary?

Which of these is not a layer of the Geosphere?

This layer is the least dense:

The idea that the continents are grinding across the ocean floor was first called the:

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

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

This is the inner-most layer of the Earth:

How does convection cause plate movement?

What layer of Earth is made of Tectonic Plates?

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

Explain why rocks farther from a mid-ocean ridge are older than rocks closer to the ridge.

How do scientists date sea-floor rocks?

What is one piece of evidence used to support the Continental Drift Hypothesis?

Sea-Floor Spreading is what kind of boundary?

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

This is the outermost layer of the Earth:

Why wasn't Continental Drift accepted as a theory? (remember: a theory is an explanation)

How does sea-floor spreading provide an explanation for how continents move over the surface?

This layer is most dense:

The Continental Drift Hypothesis was first proposed by: