Download Unit 10 vocabulary

UNIT 10 VOCABULARY (Earth’s Layers)
1) Crust: Thin, outer layer of the Earth, about 10 km thick
under the oceans and up to 50 km thick of the continents.
2) Mantle: Largest layer of the Earth, composed of very hot,
dense flowing rock found below the crust and above the
core.
3) Inner core: Solid innermost and hottest part of the earth,
surrounded by the outer core (made of nickel and iron)..
4) Asthenosphere: Plastic-like layer of the Earth on which the
lithospheric plates float and move around. Part of the
upper mantle.
5) Outer core: Surrounds Earth’s inner core, is made of
liquid nickel and iron. Includes the transition zone.
6) Lithosphere: Rigid layer of Earth about 100 km thick,
made of the crust and a part of the upper mantle (divided
into tectonic plates).
7) Plasticity: The condition of material in the asthenosphere,
having the ability to flow without being a liquid.