Question

Question 9 Multiple Choice Worth 3 points) With the discovery of magnetic reversals, there was evidence that the sea floor could create new continental crust. the seafloor contains alternate bands of minerals. only seafloor (oceanic) crust was capable of drifting. the sea floor was younger away from spreading centers. the seafloor contained a mechanism for plate tectonics.

Answer 1

Answer:

the sea floor contained a mechanism for plate techtonics

Explanation:

i took the quiz

Answer 2

Answer:

The best answer to the question: With the discovery of magnetic reversals, there was evidence that:___, would be: the sea floor could create new continental crust.

Explanation:

The theory of sea floor spreading, which came from the studies of how continents formed, and the general mechanics of geology and geophysics, led scientists, since the 1960´s to understand how continental crust, and new land, is formed from the Earth´s lava mantle and the core. This sea floor spreading has been defined as the process during which, as mid-ocean ridges, which delimit two continental plates, move apart, weakening the crust, magna is able to pour through the ridge and form new crust. In relation with magnetic reversals, it must be said that this new crust that forms as lava pours forth will be magnetically charge at the time of its deposition on the surface, and as it cools down, it will store in it the magnetic charge to which it was exposed in the mantle before it was poured forth. As such, magnetic reversal shows that the earth has changed polarity throughout time, polar reversals, and these reversals have been proven through rock evidence that has been present in the ocean ridges, almost like records of the magnetic event.