Science; Earth Science Final Exam
Study Guide Test.
crust
mantles
outer core
inner core - CORRECT ANSWER 4 layers of earth
outer core - CORRECT ANSWER only liquid layer of earth
crust - CORRECT ANSWER outermost layer of earth
continental crust
oceanic crust - CORRECT ANSWER two parts of crust
continental crust - CORRECT ANSWER makes up the continent
40 to 70 km thick - CORRECT ANSWER the thickness of continental crust
aluminum silicates - CORRECT ANSWER the continental crust is made up of light granitic rocks made up
of mostly ________
oceanic crust - CORRECT ANSWER underlies the ocean floor
5 km thick - CORRECT ANSWER the thickness of oceanic crust
magnesium silicate - CORRECT ANSWER the oceanic crust is composed of dense basaltic rocks made up
of_____
, mantle - CORRECT ANSWER semi solid , rocky , and very hot layer
2900 km thick - CORRECT ANSWER the thickness of mantle
80% - CORRECT ANSWER how many percent does the mantle makes up the earth
ferro magnesium silicate rocks - CORRECT ANSWER mantle is composed of these rocks
900 degrees celsius - CORRECT ANSWER the top layer temperature of mantle
1000 degrees celsius to 3,700 degrees celsius - CORRECT ANSWER as goes deeper in mantle , the
temperature increases from __________
lithosphere - CORRECT ANSWER a rigid layer that can break under stress
tectonic plates - CORRECT ANSWER major and minor blocks in the lithosphere
tectonic plates - CORRECT ANSWER the lithosphere is composed of these plates
asthenosphere - CORRECT ANSWER contains hot molten rocks or magma
180 km - CORRECT ANSWER the thickness of asthenosphere
convection currents - CORRECT ANSWER a heat energy traveling upward from the hot lower mantle to
the cooler upper mantle
convection currents - CORRECT ANSWER tend to move a fluid or gas particles from one place to another
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