layers of the earth

main layers of the earth

crust, mantle, core

where we live; thinnest and outermost layer of the earth; 35 KM

Crust

2 types of crust

Oceanic and Continental

what is oceanic crust made out of

young basalt, SiMg

what is continental crust made out of

old granite, COPASS

interface between crust and mantle

Mohovicic

found beneath the crust; solid; thickest layer of the earth

mantle

what is mantle made up of

SIMO and NiFe

boundary between mantle and outer core

Gutenberg Layer

separate plates which move very slowly in response to the “convecting” part of the mantle

Lithosphere

liquid - molten; magnetic field

outer core

between outer core and inner core

lehmann layer

what is inner and outer core made out of?

NiFe

are the waves of energy; caused by sudden breaking of rocks

seismic waves

what is used to record the seismic waves?

seismographs

2 types of seismic waves

bodywaves and surfacewaves

waves of Bodywaves

P wave and S wave

waves of surface waves

lovewave and rayleighwave

compression wave; fastest seismic wave;pushing and pull

P wave

transverse wave; can move rock up and down, side to side

S wave

fastest surface wave; side to side

Lovewave

destructive;rolling; they are the reason why buildings collapse; up and down and side to side

rayleighwave