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26 terms

earths layers study guide

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mantle
made up of hot rock located above the outer core, where convection currents occur
athenosphere
a portion of the upper mantle just below the lithosphere
crust
a layer of sloid rock that contains both dry land and the ocean floor, the layer we live on
name the crust's state of matter
solid
name the element(s) found in the crust
aluminum and silicon
what is the thickness of the crust
5-70km thick
name the mantle's state of matter
solid
name the element(s) found in the mantle
silicon, iron and magnesium
outer core
a layer of molten metal that surrounds the inner core
name the outer core's state of matter
liquid
name the element(s) found in the outer core
iron
what is the thickness of the mantle
2,867km thick
what is the thickness of the outer core
2,266km thick
inner core
the innermost part of the earth, spins the opposite way of the outer core
name the inner core's state of matter
solid
name the element(s) found in the inner core
iron and nickel
convection currents
circular movements of a heated substance due to changes in density
The thinnes part of the crust
oceanic crust
the thickest part of the crust
continental crust
seismic waves
are used to study the earth's inner layers
magnetic field
the energy field created by the spinning of the earth's inner and outer core's
the lithosphere's state of matter
solid
the athenosphere's state of matter
solid but able to flow slowly
shape of earth's magnetic field
an oval type shape coming out or the north and south poles
density trends in the earth
1. heating 2. less dense 3. rise 4. cooling 5. less dense 6. sink
lithosphere
between the crust and the mantle, lies just above the athenosphere