Plate Tectonics (EEN 2.1#2)

plastic like upper part of the mantle on which the plates move

How fast do plates move relative to each other?

Which feature does NOT form as a result of tectonic plates diverging?

The weight of a subducting plate helps pull it into a subduction zone in which process?

a dark, dense, igneous rock with a fine texture, found in oceanic crust

Which of these is evidence for the theory of plate tectonics?

Which feature forms at continental-continental (convergent) boundaries?

What process creates deep-sea trenches?

What was Wegener's hypothesis called?

Which suggested to early cartographers that the continents were once joined?

Which geologic event MOST likely caused the formation of Africa's Great Rift Valley?

Which is a convergent boundary that does not have a subduction zone?

Which transition is MOST responsible for gaps in the fossil record?

__________ is the name given to the single continent that existed 200 mya.

A divergent boundary within a continent forms a __________.

a current caused by the rising of heated fluid and sinking of cooled fluid

The process in which tectonic plates sink back into the mantle is called __________.

The process that converts sediments into solid rock by compaction or cementation.

Why do convergent margins tend to cause the formation of sedimentary basins?

Which features form when magma emerges between two diverging oceanic plates?

__________ is the idea that continents now seperated by an ocean were once attached.

A boundary where two plates come together is a __________.

Forms when plates of different densities converge and one plate slips under the other.

When an igneous intrusion comes into contact with surrounding rock, the surrounding rock will

layers of sedimentary rock or soil