layers
Boundaries
Continental drift
Movement of plates
sea floor spreading
100

What layer do live on

Crust

100

Where do boundaries form 

Crust

100

Who proposed the idea of continental drift

Alfred Wegener

100

What causes plates to move

Convection currents in the mantle

100

Where does the magma come from

Mantle

200

What layer is the thickest

Mantle

200

What boundaries collide

Convergent boundaries

200

What is the super continent  called 

Pangea

200

Where does seafloor spreading occur.

Mid Ocean ridges.

300

What layer is completely liquid 

Outer core

300

What kind of boundaries creates an earthquake

Transform boundaries 

300

Where can you find new crust.

Where it is formed

400

Why is the inner core solid

Because of the extreme pressure

400

What boundary creates valleys

Divergent boundaries

500

What is the inner core made of 

Iron and nickel

500

How many types of boundaries are there

3