inside the earth Flashcards
1
Q
what is the lithosphere
A
the upper most layer of the earth, mostly solid and crust cannot sink into it
2
Q
what is the asthenosphere
A
a semi molten layer beneath tectonic plates (aka magma)
3
Q
what’s the inner core
A
the solid centre of the earth
4
Q
what’s the mantle
A
the middle layer of the earth in between the crust and core
5
Q
what are tectonic plates
A
the earths surface broken into larger pieces
6
Q
3 examples of tectonic plates
A
Australian plate
Eurasian plate
North American plate
7
Q
whats continental crust?
A
made of thick granite
low density (lightweight)
forms the land
30 - 50km deep
8
Q
what’s oceanic crust
A
made of thin basalt rock
under the ocean
high density (heavy)
6-8km deep
