Layers + Tectonic plates Flashcards
What are the Mechanical layers of the Earth?
Lithosphere Asthenosphere, Mesosphere, Outer Core, Inner Core
What are the compositional layers of the Earth?
Crust, Mantle, Core
Continental crust
Thicker but less dense, where we live
Oceanic Crust
Thinner but denser, will sub duct under continental crust and younger ocean crust
Lithosphere
Includes all crust and upper mantle (remember there are two layers of crust
Aesthenosphere
Sludgy, like oobleck or toothpaste.
Outer Core
Liquid
Inner Core
Solid, Made up of mostly iron, some nickle
What are the two seismic waves?
P + S
P waves are
Primary
P waves
go through all mediums
p waves
move longitudinally
p waves
faster than s - waves
P waves
Bend when moving between layers
P waves
40 degree Small shadow zone