1.Alfred wegner was a researcher and was famous for discovering plate tectonics.Plate tectonics is a theory that the inside of the world is seperated into sevral plates.

2.Convergent:A tectonic boundary where two plates are moving toward each other.

Divergent:two plates are moving away from each other and new crust is forming from magma that rises to the Earth's surface between the two plates.

Transform boundaries:is where two of the floats - two tectonic plates - side alongside each other

A:The tectonic plate off of washington is Juan de Fuca

A:They helped form the tectonic ranges

A:Convection currents:The sun heats the earth's surface, then, when cooler air comes into contact with it, the air warms and rises.

A:The convection currents move the tectonic plates.

A:rift zone-A large area of the earth in which plates of the earth's crust are moving away from eachother, forming an extensive system of fractures and faults

A:subduction zone:marks the collision between two of the planet's tectonic plates, the pieces of crust that slowly move across the surface over millions of years.