Question

What is associated with the formation of a new continent? lava tectonic plates homeostasis earthquakes moon cycle layers of the earth (crust, mantle, etc.)
What are mid-ocean ridges? What happens with lava under the original oceanic crust?

What are mid-ocean ridges? What happens with lava under the original oceanic crust?

Magma rises from the earth's mantle.

The erupting lava causes the original seafloor to push outward, creating a mid-ocean ridge.

Tectonic plates must move apart.

Underwater sea vents cause currents that break off the continental crust, forming oceans in between.

Answer 1

1) Divergent boundaries because they cause new crust to form.
2) MORS are underwater mountain ranges that rise to connect with the continents and form new crust. The lava gets pushed under the oceanic crust.