Wegener
Under the Sea
Plate Tectonics
Boundaries
Famous Faults and Features
100

The name Wegener is associated with the supercontinent that existed 300 million years ago.

What is Pangea?

100
The adding of new material to the ocean floor
What is Sea-Floor Spreading?
100
This constant motion causes the plates to move
What are Convection Currents?
100

When two plates collide

What is Convergent Boundaries?

100

This famous fault line in California is an example of a transform boundary.
 

What is the San Andreas Fault?

200

Term for an ancient organism that has been preserved in rock

What is a Fossil?

200
Long underwater mountain chains formed by divergent boundaries
What are Mid-Ocean Ridges?
200
Breaks in the Earth's crust
What are Faults?
200
When two plates separate
What is Divergent Boundaries?
200

This underwater mountain range, caused by a divergent boundary, runs through the Atlantic Ocean.

 What is the Mid-Atlantic Ridge?

300

Wegener's hypothesis was rejected because he could not prove this

What is How the Plate Move?

300
During subduction, the ocean floor sinks back into the mantle creating these underwater
What are Deep Ocean Trenches?
300
Two continental plates colliding will create this
What are Mountains?
300
When two plates slide past each other
What is Transform Boundaries?
300

This mountain range, formed by the collision of the Indian and Eurasian plates, is the tallest in the world.
 

What are the Himalayas?

400

Term for the continents slow movement on Earth's surface

What is Continental Drift?

400

The 3 types of evidence for sea-floor spreading are ocean material, rock drilling, and this

What is Magnetic Stripes?

400
Transform boundaries usually cause these
What are Earthquakes?
400
Two continental plates separating will create this
What is a Rift Valley?
400

This area in the Pacific Ocean, known for frequent earthquakes and volcanoes, is shaped like a horseshoe.
 

What is the Ring of Fire?

500

The remains of a tropical plant in a cold area was proof of this type of evidence

What is fossil evidence?

500
In the mid-1900s, scientists mapped the ocean floor using this
What is Sonar?
500

Plates move about 1 cm to about ________ cm a year

What is 12?

500

In the mid-1960s, geologists combined all they knew about plates into a single _____________

What is Theory?

500

This deep ocean trench, located in the western Pacific, is the deepest point on Earth.
 

What is the Mariana Trench?

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