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plate tectonics

Across
Theory that earths crust and upper mantke are broken into plates that float
Boundary between 2 plates that are moving away from each other
Theory at new seafloors is formed when magma is forced upward
Areas that are formed when the earths crust separates
The outermost layer or earth
The boundary between 2 plates that is moving towards one other
The longest layer of earth lying directly above the outer core
Hot melted rock material beneath earths surface
Rigid layer of earth about 100m thick made of the crust
Area where 2 plates collide the older denser plate is forced under younger less dense plate
Down
Current in earths mantle that transforms heat into earths interior
Thick gooey molten rock matirial flowing from volcanoes
Boundry between 2 plates that slide past another
Plastic like layer of earth on which the lithosphere plates float and move
Wengers hypothesis that all continents were once connected
Large,ancient landmass that was composed of all of the continents joined together
A large section of earths oceanic or continental crust that moves around the asthenosphere
Surface which rocks move when they reach elasticy and break