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26 Cards in this Set

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