the earth Flashcards
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
2
Q
what is the mantle?
A
next to the outer core, liquid magma,2900 km
3
Q
what is the outer core?
A
liquid with many mineral such as nickel and iron, 1260 km
4
Q
what is the crust
A
closest to the edge of the earth, solid, made of rock and 8-65 km thick
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
6
Q
who came up with the tectonic plates theory?
A
Alfred Wegner
