Author Question: The concept of seafloor spreading states that A) Earth is expanding. B) seafloor is created at ... (Read 123 times)

Tirant22 · **on:** Jul 29, 2018

The concept of seafloor spreading states that

A) Earth is expanding.
B) seafloor is created at mid-ocean ridges and destroyed at deep ocean trenches.
C) sea level is rising.
D) earthquakes occur underwater.

Question 2

Plate tectonics differs from continental drift because it

A) provides a credible driving force.
B) did not explain the fit between South America and Africa.
C) showed that ancient ice sheets did not exist.
D) showed that Pangaea broke up much later than predicted.