Structure of the Earth Flashcards
1
Q
4 layers of the earth
A
- inner core
- outer core
- mantle
- crust
2
Q
radius of center to crust?
A
6371km
3
Q
heat at center of earth
A
6500 celsius
4
Q
density at center of earth
A
12g/cm^3
5
Q
inner core structure and why
A
Solid.
-due to pressure
6
Q
outer core structure and material
A
semi-molten
-liquid iron and nickel
7
Q
Mantle structure
- depth
- temp
- properties
A
- 2900km
- up to 5000/C
- plastic properties
8
Q
Crust structure
A
-made of rock, silicon, oxygen, aluminium, potassium and sodium.
- 6-10km oceanic
- 30-40km land
- 70km mountain
9
Q
upper mantle
A
lithosphere
