Theory of plate tectonics Flashcards
1
Q
The 4 layers of the earth
A
The crust, mantle, outer core, inner core
2
Q
Which is the only liquid layer
A
The outer core
3
Q
The crust is
A
The most outer layer and the thinnest. I
4
Q
The mantle is
A
subdivided into 2 regions, upper and lower. It is made of hot semisolid rock
5
Q
The outer core is
A
The only liquid later is a sea of mostly iron and nickel
6
Q
The Inner core is
A
An extremely hot solid sphere of mostly iron and nickel at the centre of the earth
7
Q
Who first started the theory that the continents were connected
A
Alfred Lothar Wegener
8
Q
What was Alfred Lothar Wegeners theory
A
The reason the continents all looked like they could fit together was because they once were and got separated because of geological forces
