Continental drift theory and convectional theory Flashcards
1
Q
Person known for origin of continental drift theory.
A
Alfred Wegener
2
Q
4 examples given by him.
A
- Zig-saw fit
- Similarities of rocks in Appalachia’s, newfound mt, Scottish mt
- Fossil evidence
- Placo-climate and glacial evidence.
3
Q
Super continent
A
Pangaea
4
Q
ocean called as
A
Panthalassa
5
Q
continents
A
SIAL rock
6
Q
Limitations of CDT
A
Couldn’t explain the driving force and idea of SIAL and sima
7
Q
mid mesozoic continent
A
Pangea broke up
8
Q
Conventional current theory
A
Talk about earth residual energy and
9
Q
How are coventional current formed.
A
Lava in mantle forms “convection cell”
10
Q
Paleomagnetism
A
study of the record of earth’s magnetic field with the help of magnetic fields recorded in rocks (alternating pattern of magnetic striping on the seafloor)
