Plate tectonics flashcard

Front

Who developed the hypothesis that all continents were once joined together?

Back

Wegner

Front

What is the thickest crust located under mountains and similar to granite?

Back

Continental Crust

Front

What two factors support Wegner’s hypothesis that continents were once joined?

Back

Mountains and fossils

Front

What type of boundary occurs when two tectonic plates divide (go apart)?

Back

Divergent boundary

Front

In the plate tectonic lab, what did the graham cracker represent?

Back

Plate

Front

What is the outermost layer of the Earth called?

Back

Crust

Front

What is the layer of the Earth beneath the crust?

Back

Mantle

Front

What is the name of the theory that explains the movement of Earth's plates?

Back

Plate Tectonics

Front

What type of boundary occurs when two tectonic plates collide?

Back

Convergent boundary

Front

What is the process called when one tectonic plate is forced under another?

Back

Subduction