On this map of the south Atlantic,why is the midocean ridge in the center of the ocean?
A)Subduction is consuming seafloor beneath both adjacent continents.
B)Seafloor is added to both sides during seafloor spreading.
C)Subduction has occurred under one and then another of the adjacent continents.
D)Seafloor spreading has stopped in this area.

Question

On this map of the south Atlantic,why is the midocean ridge in the center of the ocean? 
A)Subduction is consuming seafloor beneath both adjacent continents. 
B)Seafloor is added to both sides during seafloor spreading. 
C)Subduction has occurred under one and then another of the adjacent continents. 
D)Seafloor spreading has stopped in this area.

Quizplus · Accepted Answer

The midocean ridge in the center of the South Atlantic is due to seafloor spreading. Seafloor is added to both sides of the ridge as new magma rises and solidifies, creating new seafloor. This process pushes the older seafloor away from the ridge, causing it to become older and colder. Therefore, the midocean ridge is the center of the ocean because it marks the boundary where new seafloor is being formed.

On This Map of the South Atlantic,why Is the Midocean