the earth Flashcards

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1
Q

what is the inner core?

A

the part of the earth at the very centre, and is a solid due to the pressure, 2220 km, has nickel and iron minerals

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2
Q

what is the mantle?

A

next to the outer core, liquid magma,2900 km

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3
Q

what is the outer core?

A

liquid with many mineral such as nickel and iron, 1260 km

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4
Q

what is the crust

A

closest to the edge of the earth, solid, made of rock and 8-65 km thick

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5
Q

what evidence do we have that tectonic plates move?

A

the shape of countries like a jigsaw puzzle, there is lots of seismic activity around them, landforms, fossils and rocks

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6
Q

who came up with the tectonic plates theory?

A

Alfred Wegner

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