Progress Assessment Flashcards
What are the layers of earth
Crust, mantle, outer core, inner core
How thick is the crust
5-70km
How thick is the mantle
Approx 2900km
How thick is the outer core
Approx 2200km
How thick is the inner core
Approx 1200km
Temperature of crust
Coldest layer
Temperature of mantle
1000-3700
Temperature of outer core
4500-5500
Temperature of inmer core
5200
What is the crust made of
Solid rock that is broken up into pieces called tectonic plates. It contains rock and minerals
What is the mantle made of
Semi-molten rock called magma
What is the outer core made of
Liquid iron and nickel
What is the inner core made of
Iron and nickel
What is wegners theory
The earth used to be one continent called pangea
What is the jigsaw fit theory
Continents fit logether like a puzzle. An example is India and eurasia.