Theory of Plate Tectonics Flashcards
1
Q
What did Alfred Wegener publish?
A
the theory that a single continent existed about 300 million years ago
2
Q
What was the super-continent named?
A
Pangaea
3
Q
Geological evidence for the theory?
A
- fitting of South America and West Africa
- rock found in Scotland similar to Canada
4
Q
Biological evidence for the theory?
A
- fossils found in Indian limestone similar to Australia
- fossil remains of a reptile similar in South America and Africa
5
Q
What did examination of the ocean crust either side of the mid-Atlantic ridge suggest?
A
that sea floor spreading was occurring
6
Q
What does sea floor spreading imply?
A
that the earth must be getting bigger
