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Flashcards in Continental Drift Deck (18)
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1
Q

What was the original SUPERCONTINENT called?

A

pangea

2
Q

What does the THEORY OF CONTINENTAL DRIFT say?

A

land masses and continents drifted

3
Q

Who proposed the theory of continental drift?

A

Alfred Wegener

4
Q

What were the two parts of Pangea?

A
  • laurasia

- gondwanaland

5
Q

What are the evidences for the continental drift?

A
  • paleomagnetism
  • separated continents with similar fossils
  • ancient glaciation
  • tropical forest climates on separated continents
6
Q

What are PLATE TECTONICS?

A

modern theory to explain movement of continents

7
Q

What is ANCIENT GLACIATION?

A

use of the true continental edges for reconstruction

8
Q

What does plate tectonics explain?

A
  • sea floor spreading
  • subsections
  • movement of the lithosphere
9
Q

What causes plate tectonics?

A

thermal convection

10
Q

What is THERMAL CONVECTION?

A

rotation of liquid mantle in the asthenosphere

11
Q

What are the different plate tectonics?

A
  • plate divergence
  • plate convergence
  • transform
12
Q

What is PLATE DIVERGENCE?

A
  • pulling apart

- creates rift valleys

13
Q

What is an example of a RIFT VALLEY?

A

Sinai Peninsula

14
Q

What is PLATE CONVERGENCE?

A
  • moving towards each other
15
Q

What happens in OCEANIC and CONTINENTAL CRUST convergence?

A
  • denser plate is subducted under lighter plate and melts

- creates volcanoes

16
Q

What happens in CONTINENTAL and CONTINENTAL CRUST convergence?

A

mountain creation

17
Q

What is a TRANSFORM MOVEMENT?

A
  • plates slide past each other

- creates transform faults

18
Q

What is an example of a transform fault?

A

San Andreas Fault, CA