All of the following was used as evidence by harry hess to conclude that the sea
floor was spreading, except:
rocks near the mid-atlantic ridge were less dense than those further out
the rocks' magnetic alignments matched up with the changes in the magnetic
field
sonar technology confirmed that the crust was moving
rocks near the mid-atlantic ridge were younger than rocks further out.

The correct answer is B) The rocks' magnetic alignments matched up with the changes in the magnetic field.

All of the following was used as evidence by Harry Hess to conclude that the seafloor was spreading, EXCEPT: The rocks' magnetic alignments matched up with the changes in the magnetic field.

It is commonly said that humans know more about the moon and space about the oceans. And that is true. Much of what is in the oceans is unknown for humans. But thanks to the work of people like Harry Hess, we know a little bit more. Henry Hammond Hess (1906-1969) was a geologist that developed the theories of seafloor spreading, where oceanic crust is formed due to volcanic activity deep in the sea. His work later helped other scientists to develop the plate tectonics theory.

the decreasing neutrality of the u. s. in world war i

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