formation of new areas of oceanic crust, which occurs through the rising of magma at mid-ocean ridges and its subsequent outward movement on either side.

A fault is a fracture, or break, in the Earth's crust

The mid-ocean ridge is formed where two tectonic plates meet under the ocean.

Convection currents are flowing fluid that is moving because there is a temperature or density difference within the material.

A rift valley is a lowland region that forms where Earth's tectonic plates move apart or rift.

A convergent boundary is where two tectonic plates push together.

magma is melted rock that is under the ground.

Tectonic plates are broken pieces made of the Earth's crust or lithosphere.

Mountains form and earthquakes shake at tectonic plate boundaries, where new landforms rise and fall.

Trenches are like extremely deep valleys, just in the ocean instead of on land.

A divergent boundary is an area where two crustal plates are separating.

The lithosphere is the solid and rigid outer layer of our planet.