Earth Flashcards
1
Q
Mantle
A
Upper most-solid due to touching the crust
Upper-Rheid 5% acts as lubricte some minerals lower mp
Lower-solid
Made of silicates
Function-convection currents move plates and transfer heat
2
Q
Outer core
A
Liquid
Iron and nickel composition
Magnetic field deflects solar radiation
3
Q
Inner core
A
Solid
Iron and nickel and radioactive elements composition
Emits heat from radioactive decay
4
Q
Upper most mantle + crust =???
A
Lithosphere
Solid rigid brittle (plates)
5
Q
Oceanic crust density
A
2.9
6
Q
Continental crust density
A
2.7
7
Q
Upper most mantle density
A
- 3
3. 1 is peridotite
8
Q
Crust
A
Solid
Oceanic-basalt
Continental-granite
Function-support life
