Geography - Structure of the Earth (Plates, Convection currents)

Plates that move apart from one another are called

Separating plate boundary

Plates that press against each other

Colliding Plate boundary

What are 2 things that could happen when plates press against eachother

1. the plates will crumple under pressure and buckle and form mountains.

2. Subduction, the heavier oceanic plate will sink under the continental plate and melt into the mantle.

Plates that move against each other

Sliding plate boundary

What can plates that move against each other cause?

Earthquakes

Process of Convection Currents

1. Part of the mantle is heated up near the core.

2. The magma moves upwards in currents, as the heat makes it rise.

3. The crust is cooler than the magma so it cools down.

4. When it has cooled down, it goes back towards the core

5. This process repeats, which causes the plates to move

The name when the continents where combined together

Pangea

The name of the process of continents moving apart

Continental drift