Show:
Theory of Plate Tectonics
Pangaea
Landforms/Events
Plate Tectonics
Boundaries
100

How do fossils present evidence for continental drift?

Similar species fossils (that cannot swim in ocean) are found in different continents like Africa and South America

100
What was Pangaea?
a giant supercontinent made up of the current continent 200 million years ago
100
What is the ring of fire
A zone of frequent earthquakes and volcano eruptions
100

What is a plate in geographical terms (layer of Earth)?

Pieces of the lithosphere

100
Where do convergent boundaries occur?
between oceanic and continental boundaries, oceanic and oceanic boundaries, and continental and continental boundaries
200
Who First proposed the theory of continental Drift?
Alfred Wegener
200

How can you explain the evidence of fern fossils in Antarctica?

Antarctica was located to the north (closer to the equator) and drifted down.

200

What types of boundary results in the formation of mountains?

Convergent

200

What causes plate movement?

Through the mantels convection currents

200
Where do divergent boundaries exist?
where plates are spreading apart and new crust is formed
300

What is the theory of plate tectonics?

Lithosphere is divided into pieces called plates and they slowly drift atop a liquid core.

300

How did Pangaea turn into the continents that we have today?

Continental Drift

300

A rift valley (such as the great African Rift Valley) is where two plates...

pull diverge. 

300
What layer do the convection currents move in?
The mantel
300

What are the three types of plate boundaries?

Divergent, convergent, Transform

400
How is Pangea evidence for continental drift?
Continents fit together like puzzle pieces
400

Where was India located 200 million years ago? What is your evidence?

Closer to the south pole, evidence of glaciers
400

Where does subduction occur?

oceanic-continental  convergent

Oceanic-Oceanic convergent 

400

How do convection currents move the plates?

heat from the core causes molten rock (magma) in the mantle to rise, cool, and sink, creating currents that push and pull on the rigid tectonic plates above

400
What type of boundary exists at the mid atlantic ridge?
Divergent boundary
500
How does distinctive rock strata support continental drift theory?
Geological structures of the rocks on different continents are identical to each other.
500
When did Pangaea exist?
What is 200 million years ago
500

What is the relationship between the distance from mid-ocean ridge and age of rocks?

As the distance from the MOR increase the age of rocks increase

MOR: newest              trenches: oldest

500

What is the name of the hypothesis that led to the development of the theory of plate tectonics?

The hypothesis of continental drift

500
Where is the mid-atlantic ridge located?
the center of the atlantic ocean from north to south