Continental Movement
Pangaea
Ridges and Trenches
Plate Boundaries
100
I am formed thousands of miles below continents by oceanic crust being pushed under the continental crust.
What are trenches?
100
The theory that the Earth was once one big "super continent."
What is Pangaea?
100
I am the geological feature that caused the Atlantic Ocean to grow from a small inlet to a large ocean.
What is the Mid-Atlantic Ridge?
100
The Himalayas formed when one plate dove under another, causing the Eurasian plate to override the Indian plate.
What are convergent plate boundaries?
200
Earthquakes form as plates do this.
What happens when plates rub against each other?
200
Permian, Triassic, Jurassic, Cretaceous, and present day.
What are the five stages of Pangaea?
200
10,000 miles.
What distance does the Mid-Atlantic Ridge span?
200
Typically when I occur, plates move past one another and no damage is done, but I did cause the San Andres Fault to form.
What are transform boundaries?
300
1-5 cm.
What is the distance the continents shift each year?
300
I hypothesized the theory of Pangaea.
Who is Alfred Wegener?
300
New ocean crust is formed and pushed toward the continental crust as this occurs.
What is volcanoes erupting along the Mid-Atlantic Ridge?
300
I am unpredictable and cause irregular earthquakes. Two major plates and at least one microplate are involved in my shifting.
What are plate boundary zones?
400
The process when underwater volcanoes erupt and oceanic crust pushes the continents apart.
What is sea floor spreading?
400
1912.
What is the year Wegener hypothesized the theory of Pangaea?
400
All of Mt. Everest could fit inside of this place, with 1 mile to spare.
What is the Challenger Deep?
400
When I am involved, plates pull apart and new crust is formed.
What are divergent plates?
500
Mountains form.
What happens when plates collide?
500
These two continents look like they could fit together like puzzle pieces.
What are South America and Africa?
500
These geological features are the direct result of trenches forming under continents.
What are volcanic island chains and mountain ranges?
500
This country will eventually separate to two different plates as a result of this form of plate boundary movement.
What is Iceland?
M
e
n
u