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Theories of earth

earth

QuestionAnswer
huge cracks in the ocean floor mid ocean ridge
float on top of the asthenosphere and flows plates
where two plates meet plate boundaries
two plates slip past eachother in opposite directions transform boundary
two plates move apart divergent boundaries
two plates come together and collide convergent boundaries
the super continent in Wegeners theory of continental drift Pangaea
the process that constantly adds new material to the ocean floor sea floor spreading
fossil evidence of wegeners theory fern plant fossils were found all over the world
Iron and nickel about 750miles thick Inner core
Liquid iron and nickel about 1400miles thick Outer core
what kind of rock does the oceanic crust contain basalt
what kind of rock does the continental crust contain granite
the upper part of the mantle made of molten rock lithosphere
the lower part of the mantle asthenosphere
the core is made of mostly iron and nickel
the core is earths inside layer
the core is a giant magnet
Created by: 15jjudge
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