EARTH'S INTERIOR

BROAD STRUCTURE

• 33m = 1°C hotter

• discontinuities (mohoroviccic)

• core, mantle, crust

CORE

• radius 3500m long

• 1/3 mass i 1/6 volume

• gravity and rotation

• liquid outer and solid inner part

• nife

• high pressure

OUTER CORE

• liquid metal mass

• convection currents and processes

• seismic waves

MANTLE

• most of the volume

• lower mantle/mesosphere is solid (mgsife)

• middle mantle/asthenosphere has solid but liquid magma (convection currents)

• upper mantle is rocky

• lithosphere

CRUST

• highest and thinnest layer

• oceanic and continental crust

OCEANIC CRUST

• 5-10km

• 2/3 area

• basalt layer

CONTINENTAL CRUST

• 1/3 area

• granite layer

• 40km

• thickest under volcanic mountains (70km)