Notes - Chapter1 15:33:00 Geography=EarthScratching...

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Chapter 1 13/01/2011 15:33:00 Geo-graphy = Earth Scratching Habitable world is the main area of study Aristotle divided the world into 5 zones Two frigid (poles) Two temperate zones One Torrid (hot) zone (equator) Scientific Method Question Hypothesis o Null hypothesis (opposite of hypothesis) o Trying to disprove the null hypothesis Plan a Test Predict Experiment Conclusion Add to  THEORY The Earth’s Spheres Atmosphere  Air Cryosphere  everything that’s frozen Lithosphere  rocks Biosphere  life Hydrosphere  water You can know the name of a bird in all the languages of the world, but when  you’re finished, you’ll know absolutely nothing whatever about the bird… I learned very  early the difference between knowing the name of something and knowing something. –  Richard Feynman Earth is not a perfect sphere
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Erosion 13/01/2011 15:33:00 Denudation
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Weathering o Mechanical weathering Frost wedging results in a pile of rocks Intense heat Lightning strikes and forest fires Salt Wedging Exfoliation Happens when there is a shift from downwards pressure  to upwards pressure o Chemical Weathering Iron oxidation o Biological Weathering Root action Lichen leaching Made up of algae and fungus Bioturbation Physical transport of lithosphere from one place to  another Ants Mass Wasting o Factors Angle of repose 
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Moisture o 5 different kinds Rock fall Fragments lose contact with the surface and free fall at  the speed of gravity Cone-shaped deposit  talus Pieces are known as talus (larger) and scree (gravel) Slide Collapse of a slope along a plane Slump “Rotational Slides” Occurs on a curved plane. Hyperbolic curve Flow Always prompted by a heavy amount of moisture Earthflow- saturated ground moving downhill after a  heavy rain Mudflow- large amounts of erosion occurring at one time Creep Least noticeable Very slow Occurs on every that isn’t non-weathered material
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This document was uploaded on 10/28/2011 for the course GEOG 110 at UNC.

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Notes - Chapter1 15:33:00 Geography=EarthScratching...

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