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What is an earthquake
Shaking of earths surface followed by a sudden release of energy in lithosphere
Layers of the earth
Crust, Upper Mantle, Lower Mantle, Outer Core (liquid), Inner Core (solid)
Lithosphere
Crust + Upper Mantle
P Waves
Fastest, First to arrive, moves through solid and water, particles move in same direction as wave
S Waves
Slower, only move through solids, particles move up and down and side to side
S-P Interval
Difference between P wave arrival time and S wave arrival time
Amplitude
The “height”/Y axis of a line on a seismogram
Topography
Describes physical
features of the landscape
Contour Lines
Continuous Lines that represent points of equal elevation
Contour Interval
Interval btwn contour lines
Lines form a V shape to point ______
Upstream