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26 Cards in this Set
- Front
- Back
Mantle
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above the outer core
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depth of mantle
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2900 km
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mass of mantle
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68%
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volume of the mantle
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80%
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mantle consists of
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iron, silicon, oxygen, and magnesium
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What is the principal of the mantle? and its definiton
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placisity and its the ability of a solid to flow like a liquid
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depth of the Moho
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32 to 64 km
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crust
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outermost layer of the earth
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what are difinintions of the 3 rocks
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igneous: form when lava cools and solidifies
Sedimentary rocks: ricks that form when sediments are cemented together |
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metamorphic rocks
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forms when Igneous rocks are changed by heat, pressure or chemical reactions
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What are the varies in thickness in the crust
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oceanic crust 8km ehile continental is 32 km
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Liposphere
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solid outermost layer of the earth
topmost part of the man broken into a number of plates which float and move on the asthemosphere |
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asthenosphere
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directly below the liposphere
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shadow zone
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no seismic waves
found at 105- 140 from the earth's sourse |
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earthquake
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when earth's uppermost layer moves because shock waves carry energy through the earth
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seismic waves
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Primary waves- travel through gasses, liquids and solids
secondary waves- travel through solids |
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seismograph
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instrument that detects and records seismic waves
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What is depth of earth's inner core?
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5150 km
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diameter of inner core
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2600 km
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what does the earth's inner and outer core consist of?
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iron and nickel
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Outer core depth
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2900 km
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thickness of outer core
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2250 km
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temperature of outer core
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2200 and 500 degrees celcius
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South-trending drift
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brings sediments from North of Cape Hatteras and deposits them on the shelf of back into the Gulf Stream
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Gulf Stream
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flows from the South West to the Northeast. This strong current prevents sediments from being deposited on the continental shelf, pushing them onto the continental slope and rise
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Deep Western Boundary Undercurrent
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flows southwest opposite and underneath the Gulf stream. Sediment from this current is deposited on the continental slope and rise.
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