Plate Tectonics Flashcards
1
Q
What are the three main layers of the earth
A
Crust, mantle core
2
Q
What texture is the crust
A
Solid and rigid
3
Q
What material is the outer core
A
Nickel and iron
4
Q
What temp is the inner core when solid
A
5000-6000
5
Q
What is a convection current
A
Convection current transfer heat through liquid such as water, moltenrock.
It drives the earth ocean currents, atmospheric weather and geology
6
Q
The crust
A
The upper part of the litosphere
Continental crust forms the land
Made mostly of granite, almost 30 solem thick
7
Q
Constructive plate boundaries
A
When land is gained
Magma hardens and creates new rock
8
Q
Destructive plate boundaries
A
When land is lost
Sinks and creates fold mountains
