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Details Title: Geol Test II Description: Earthquakes-River Systems Total Flash Cards: 12 Created: 04/08/2007 14:44:15	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term Valley and Ridge Definition sandstone, shale, limestone Term Piedmont Definition Greenstone, Gniess, Slate, Phyllite, Schist Term Coastal Plain (tidewater area) Definition silt, sand, clay Term Earthquake Effects (6) Definition 1. Fire: historically most deaths 2. Structural Damage: today most deaths, building codes 3. Tsunami: seismic sea wave 4. Landslides: Jamaica, Alaska 5. Cracks in the Ground 6. Changes in Land Level Term Elastic Rebound Theory Definition Cause of Earthquake: *the friction of two surfaces rubbing together and causing destruction -stress vs. strain -elastic vs. plastic deform *rocks are elastic in EQ Term L waves Definition major shock waves, destructive waves Term focus epicenter Definition point where earthquake occurs on surface directly above focus Term Earthquake Magnitude Definition Richer Scale L wave amplitude log scale 1-10 30x from each numer (ex from 4-5 = 30x) Term Plate Boundaries (2) Definition Shallow Focus: converging and diverging Deep Focus: converging Term Scientific Theory (4) ex. continental drifting is a theory Definition 1.observations 2.hypothesis 3.theory 4.law *no absolutes in science Term Evidence for Continental Drifting (5) Definition 1.Shape of Continents: Alfred Wegner 1915 Pangea 2.Fossil Distribution: Glossopteris (fern), fossil 3.Paleoclimates: Africa, India; Australia, Antarctica 4. Paleomagnetism: earth's magnetic field; magnetic declination, magnetic inclination: polar wandering or movement of continents? 5. Seafloor spreading: ocean driling Term results of seafloor spreading (3) Definition 1. young crusts at ridge, older crusts at continents 2. sediment: same pattern 3. reversal of magnetic poles =1950 Glomar Challenger