Plate Tectonics Flashcards
0
Q
How did Alfred Wegener prove theory of continental drift?
A
In Africa and South America
Matched layers of rock
Similar earthworms
in 1960’s evidence was overwhelming:
Found magma rises through sea floor and solidifies - sea floor spreading creating new surface
There are bands of polar magnetic iron particles which are symmetrical on either side of the Mid-Atlantic ridge - proving new sea floor was being created as continents moved apart
1
Q
What evidence supports the theory of plate tectonics?
A
Similar plant and animal fossils on opposite sides of Atlantic
Coastline of Africa and South America fit together
