Science yr8 term3 Flashcards
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How thick is the crust
5km thick under the oceans and 30km thick under the continents
Where is the Mantle located
directly below the crust and is about 1,800 miles thick
What is the Outer core
the only liquid layer of the earth
What is the Outer core made of
a sea of mostly iron and nickel
What is the Inner core
an extremely hot, solid sphere
What is the Inner core made of
mostly iron and nickel at the center of the earth
What are the 7 major tectonic plates
Eurasia, Australia, North America, South America, Pacific, Africa and Antarctica
What is the theory of continental drift
the continents of each have come together to form supercontinents and then split up
What is a slab pull in tectonic plates
The cooler sinking plate pulls the rest of the rest of the warmer plate along behind it.
Diverging boundaries
are where tectonic plates are moving apart from each other in opposite directions
