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ž THE CRUST * The ________layer of the earth * Consists of the continental(______) and oceanic (______) crust Thickness: - ____km: Under the ocean - ____km: Under the continents ž - Thinnest under the _______ ž - Thickest under the ________ Properties: - _____and _____ ž Composition/State of Matter: - Mostly _____ and ______ - Solid THE MANTLE * The layer between the ______ and the ______ ž Thickness: - 2,900 km; ____% of the Earth’s _____ ž Composition: - Iron, _________, silicon and _______ ž Properties/State of Matter: - ______ Mantle (____________) is solid - ______ Mantle (____________) is liquid CONVECTION CURRENTS * Circulates _______ and help move the ______________. * _________ is heated raises to the top of the _______ and as it cools, sinks to the lower mantle again. LITHOSPHERE * Outermost part of the _______ and ________ ž Thickness: - 100___ ž Composition: - ______, Silicon and Magnesium 1 ž Properties/State of Matter: - ______, rigid, brittle, broken into _______ that move slowly and independently of one another. - This plate movement causes _________, volcanic eruptions, mountain shaping and _________ spreading. - This section floats on top of the ________________ ASTHENOSPHERE * Upper mantle, highly viscous liquid rock ž Thickness: - _____ to _____km ž Composition: - Iron, Magnesium, _______ ž Properties/ State of Matter: - ______, with a higher temperature and pressure than the _________ so it is capable of flowing - The _______________ cause the plates in the lithosphere to move. ž OUTER CORE: * The liquid layer of Earths core that lies beneath the _________ and surrounds the __________ ž Thickness: - _______ km; ______% of Earths mass (together with the inner core) ž Composition: - _______-iron alloy (metal mixture) ž Properties/State of Matter: -_________, Earths ________field is believed to be controlled by the liquid outer core. ž INNER CORE: * The _______, dense center of our planet that extends from the bottom of the outer core to the center. ž Thickness: -1,200 km ________ ž Composition: - _______ ž Properties/State of Matter: - Dense, solid and spins the ________ ________ (eastwardly) than the outer core that spins (westward) 2
