geography tectonic hazards Flashcards
1
Q
what is the crust made from
A
solid rock
2
Q
what is the mantle made from
A
mainly magnesium and some iron
3
Q
what is the outer core made from
A
a liquid layer made of Iron and nickel
4
Q
what is the inner core made from
A
a solid layer made of Iron and nickel
5
Q
how thick is the crust
A
0 - 60 km thick
6
Q
how thick is the mantle
A
2900 km thick
7
Q
how thick is the outer core
A
2200 km thick
8
Q
how thick is the inner core
A
1220 km thick
9
Q
temperature of the mantle
A
500 - 900 °C
10
Q
temperature of the outer core
A
4400 °C
11
Q
temperature of the inner core
A
5430 °C
12
Q
what is continental crust made from
A
mainly granite
13
Q
what is the oceanic made from
A
mainly basalt
14
Q
how thick is the oceanic crust
A
5 - 10 km thick
15
Q
how thick is the continental crust
A
25 - 100 km thick
