Continental Drift
Who was the scientist that proposed the idea that the continents were all one giant super continent around 270 million years ago?
Alfred Wegener
What are the 4 main layers of the Earth's interior?
Crust, Mantle, Outer Core, & Inner Core
What was the name of the scientist that helped bring about the theory of plate tectonics?
Harry Hess
What are the 3 type of plate boundaries?
Convergent, Divergent, & Transform
What were the main pieces of evidence that Wegener used to prove Pangaea's existence? (Name at least 3)
Fossils, Puzzle Piece Continents, Glaciers, Mountains
What was the theory that proposed that the continents were all once one giant super continent before they separated?
The Theory of Continental Drift
In which layer do convection currents occur?
What did Hess discover on the ocean floor?
The Mid-Atlantic Ridge
At which plate boundary do mountains form? (Be specific in the types of crusts involved)
Continental-Continental Convergent
Which two continents match up almost perfectly like two puzzle pieces?
Africa & South America
What was the name of the super continent that existed about 270 million years ago?
Pangaea
Which two layers of the Earth are composed of liquid material?
Mantle & Outer Core
What is the area called where two plates meet?
Plate Boundary
At which plate boundary do fault lines form?
Transform Boundary
What was the name of semi-aquatic organism whose fossil was used as evidence by Wegener?
Mesosaurus
What was the name of the book that Alfred Wegener wrote?
The Origin of the Continents
Which layer of the Earth contains the tectonic plates?
The Lithosphere
What device did Hess use in his great discovery?
Sonar
Which type of crust goes back into the mantle during subduction? Explain why.
Oceanic Crust. Because it is more dense.
What is the name of the tropical plant fossil that was used as evidence by Wegener?
Glossopteris
Why was Wegener's theory rejected?
He could not explain what made the continents move
What is the inner core composed of?
Solid nickle & iron
What is responsible making the plates move?
Convection currents in the mantle
At a Subduction Zone (Convergent Boundary)
What is the latin meaning for Pangaea?
All Land