PLATE TECTONICS
PLATE TECTONICS
What is Plate Tectonics? Earth's Lithosphere-the outermost layer of the Earth and it is made up of crust and the upper part of the mantle.
Crust
Crust the outer portion of the Earth.
average density of two point eight grams per cubic centimeter.
thickness ranges from five to fifty kilometers.
made of a variety of solid rocks like:
Sedimentary (forms from sediments compaction)
A Metamorphic (forms by transformation of other rock)
A Igneous (forms from magma or lava solidification)