Who discovered seafloor spreading?
Who discovered seafloor spreading?
Harry Hess
Harry Hess: One of the Discoverers of Seafloor Spreading.
Who invented continental drift theory?
scientist Alfred Wegener
The theory of continental drift is most associated with the scientist Alfred Wegener. In the early 20th century, Wegener published a paper explaining his theory that the continental landmasses were “drifting” across the Earth, sometimes plowing through oceans and into each other.
Is Alfred Wegener’s theory true?
Wegener published his theory in full in 1915, but his contemporaries mostly found it implausible. By 1930 it had been rejected by most geologists, and it sank into obscurity for the next few decades.
What are the 4 steps of seafloor spreading?
Terms in this set (7)
- Magma comes out of the rift valley.
- Magma cools to rock and hardens.
- Rock is pushed away as new rock is formed at MOR.
- Oceanic crust and continental crust meet at the trench.
- Oceanic crust bends down under the continental crust.
- Gravity pulls rock towards mantle.
- Rock melts to mantle.
Why is Alfred Wegener important?
Alfred Lothar Wegener: Moving continents. Perhaps Alfred Wegener’s greatest contribution to the scientific world was his ability to weave seemingly dissimilar, unrelated facts into a theory, which was remarkably visionary for the time.
What are the 4 evidences of continental drift?
The four pieces of evidence for the continental drift include continents fitting together like a puzzle, scattering ancient fossils, rocks, mountain ranges, and the old climatic zones’ locations.
What is continental drift theory PDF?
The Theory of Continental Drift. Alfred Wegener (1912) proposed:- ❑ A large super-continent PANGEA split into smaller. fragments about 200-300 million years ago. These then drifted apart to form the present arrangement of continents.
