Creation of crust

Question 1

Where do rising convection currents diverge, and what does this cause?

Answer 1

They diverge at the base of the lithosphere and the drag they create causes the plates above them to diverge also

Question 2

What happens as the plates diverge?

Answer 2

Magma rises up to fill the gap created, then cools to form new crust, this new crust is dragged apart and even more crust forms between it

Question 3

At a plate margin under the sea, which process do the diverging plates cause?

Answer 3

Sea floor spreading, which is where the sea floor gets wider.

Question 4

What can sea floor spreading result in?

Answer 4

Creation of structures called mid-ocean ridges

Question 5

What are mid-ocean ridges?

Answer 5

Ridges of higher terrain on either side of the margin

Question 6

What happens as plates move together?

Answer 6

The crust is destroyed or sometimes pushed up into mountains