Show:
Wegener
Under the Sea
Plate Tectonics
Boundaries
Grab Bag
100
The name Wegener game to the super-continent that existed 300 million years age
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 to plates collide
What is Convergent Boundaries?
100
What plate is the United States on?
What is North American plate.
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
We are moving towards this direction.
What is west.
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
What direction is South America moving?
What is west.
400
Term for the continents slow movement on Earth's surface
What is Continental Drift?
400
What evidence do we have that the seafloor is spreading?
What is older rocks are further away.
400
Transform boundaries usually cause these
What are Earthquakes?
400
Two continental plates separating will create this
What is a Rift Valley?
400
What happened when the India plate moved into the Eurasian plate?
The himalayas were formed.
500
What do scientists believe will happen in the further with the continents?
What is be one large continent again.
500
In the mid-1900s, scientists mapped the ocean floor using this
What is Sonar?
500
Plates move about 1 inch to about ________ inches a year
What is 2?
500
In the mid-1960s, geologists combined all they knew about plates into a single _____________
What is Theory?
500
Do the Himalayas continue to grow?
What is yes.