Plate Tectonics Review

What is the name of the supercontinent that Alfred Wegener proposed?

How did Wegner explain finding identical fossils separated by oceans.

What did WEGNER NOT use as evidence of Continental Drift? (not available til after his death!)

At first, scientists ________the theory of CONTINENTAL DRIFT.

WHY did scientists REJECT the idea of CONTINENTAL DRIFT.

Where did scientists first find evidence of WHY the continents moved?

What technology was used to make the first map of the ocean bottom?

Scientists expected the ocean bottom to be flat like a bathtub. What structure did they discover in the MIDDLE of all the world's oceans?

According to the theory of sea floor spreading, where is NEW OCEAN CRUST formed?

According to the theory of SEA FLOOR SPREADING which rock is likely to be the OLDEST? (click picture for closer look!)

According to the theory of SEA FLOOR SPREADING which rock was likely made at the same time as rock B?(and is the same age?)

According to the theory of SEA FLOOR SPREADING which rock is likely to be the YOUNGEST? (click picture for closer look!)

Magnetic polarity preserved in ocean crust ALSO supports Sea Floor Spreading. Rocks formed at the same time have

All of these are evidence of Sea Floor Spreading EXCEPT:

The MAIN force causing Earth's plates to move is

Magma in the mantle is heated by

As magma HEATS up, it gets

As magma travels from point B to point C, it will (click diagram to enlarge)

Other than Convection currents in the mantle, what OTHER FORCES move the plates? (Pick 2)

What are the basic layers of Earth in order from outside to inside?

What is the THINNEST layer of the Earth?

Which layer is made of SOLID METAL?

Which layer is made of LIQUID METAL?

The convection currents that move the plates happen in this layer.

The main way scientists learned about the inside of the Earth was by

Which of these is a CONVERGENT plate Boundary?

At location B (enlarge image) you are most likely to find:

At location C (enlarge image) you are most likely to find:

At which location are you likely to find Volcanic Mountains?

What feature is likely to form at the boundary of the Nazca (ocean) plate and the South American Plate? (Enlarge to see plates and arrows!)

Divergent Plates

What feature is likely to form at the boundary of the Nazca (ocean) plate and the Pacific Ocean Plate? (Enlarge to see plates and arrows!)

At location B (enlarge image) you are most likely to find:

Transform plate boundaries

At a TRANSFORM plate boundary you would be likely to find