Ocean crusts moving apart from each other forming new crust.
meaning "all of earth" the one super continent that existed millions of years ago.
Two plates moving toward each other.
Man who invented plate tectonics.
Study of the earths ancient magnets.
When two plates move against each other.
Below the lithosphere and the upper mantle, responsible for convection currents.
Magnetism or polarity
The negative and normal information from the ocean floor.
The crust and upper mantle.
two plates moving apart.
Plastic like form inside the earth that takes up most of the earth.
The theory that land masses are moving.