49-52 please answer all 4 This is a weathering type associated with curved and c

Question

49-52 please answer all 4 This is a weathering type associated with curved and concentric sets of joints breaking away in successive layers. exfoliation hydrolysis landslide creep In Hawaii, the direction of movement of the "hot spot" means that this is the oldest part of the island chain. northwestern islands center islands southeastern islands largest island How does the Theory of Continental Drift compare to the Theory of Plate Tectonics? Why are two of the nine kinds of plate boundaries described as "short-lived"?

Explanation / Answer

49) a) exfoliation

Exfoliation is a type of weathering in which curved plates of rock are removed from rock under them.

51) The Continental Drift theory says that the continents comprise of less weight rocks that lie on heavy crustal matter which move slowly with time.

According to the plate tectonics theory, scientists say that    the surface of the earth is divided into a number of plates, which are about fifty miles thick and these plates move relative to one another over a period of time.

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