Author Question: Interest in continental drift waned until studies of Earth's magnetic field and oceanographic ... (Read 69 times)

plus1 · **on:** Jul 13, 2018

Interest in continental drift waned until studies of Earth's magnetic field and oceanographic research showed that ____.
A)present-day oceans basins are old features that resulted from the breakup of Pangaea
B)continents were constantly being pulled toward the poles by magnetic forces
C)present-day ocean basins are not as old as continents but instead, are geologically young features that resulted from the breakup of Pangaea
D)iron-rich continental plate material was being pulled into the ocean by Earth's magnetic field
E)present-day ocean basins are old features that resulted from erosion of continental coastlines

Question 2

Would it be surprising to find a deposit of sand on the deep ocean floor? Why or why not?

srodz · **Reply #1 on:** Jul 13, 2018

Answer to Question 1

C

Answer to Question 2

Yes, it would be surprising to find sand on the seafloor. Because sand is relatively large, it requires more energy to transport. However, as distance from the shoreline increases, transport energy decreases, and only the finest particles, like silts and clays, are able to be carried.