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the structure of the earth - Coggle Diagram
the structure of the earth
Crust
thin and solid
outermost layer
made of rocks
two types:
oceanic crust
continental crust
mantle
below crust
semi-solid
thickest layer
convection currents cause plate movements
divided into:
lower mantle
upper mantle
core
inner core
made of iron and nickel
solid due to immense pressure
hottest part of earth
outer core
creates earths magnetic field
liquid iron and nickel
lithosphere
broken into tectonic plates
rigid outer layer
asthenosphere
semi-molten rock
part of the upper mantle
plates move on top of this layer