1.2B

Question 1

What is Sea Floor Spreading?

Answer 1

This is a continuous input of magma forming convection currents which spread the plates apart from each other. It occurs at divergent plate boundaries under the oceans and forms mid-ocean ridges.

Question 2

What is Slab Pull?

Answer 2

This is the pulling force exerted by the denser oceanic plate plunging into the mantle due to its weight.

Question 3

What is Ridge Push?

Answer 3

Ridge push is the result of gravitational forces acting on the young, raised oceanic lithosphere around mid-ocean ridges, causing it to slide down the similarly raised but weaker asthenosphere and push on lithospheric material farther from the ridges.