layers of the earth 1/2

the crust, the mantle and the core

three layers of the earth

core

the ineer most portion (of the earth)

mantle

where there are molten materials present

crust

which floats above the mantle, the thinnest and the outermost portion

brittle rock layers

what the earth’s crust consists mainly of

faults

what generates earthquakes

friction

what keeps faults from moving

normal fault, reverse fault, stike-slip fault

types of faults

normal fault

forms as a result of tension

reverse fault

forms because of compresion

stike-slip fault

forms when the rock layers on the opposite sides of a fault slide one past one other horizontaly