geography 1114 final

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geography 1114 final
2010-12-12 21:02:22

oklahoma state geography
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  1. _____ is the lowering of the surface of the continents
  2. the movement of particles downhill, caused by collision of raindrops on the ground
    splash erosion
  3. the most important weathering agent
  4. a feature formed by precipitated deposits of minerals on the wall, floor, or roof of a cave
  5. a stream that consists of a multiplicity of interwoven and interconnected shallow channels
    a braided stream
  6. the location in the U.S. that suffered great economic damage due to sinkholes in the 1980's
  7. a sharp irregularity in a stream channel profile, commonly caused by abrupt changes in bedrock resistance
  8. profuse cracks that can be responsible for extensive weathering despite their size
    microscopic openings
  9. landform at the mouth of a river produced by the sudden dissipation of a stream's velocity and the resulting deposition of the stream's load
    a delta
  10. the union of oxygen atoms with atoms from various metallic elements to form new products
  11. sheetlike deposits of calcite formed where water flows down the walls or along the floors of a cave
  12. the region of the former Yugoslavia where karst topography recieved its Germanized name
  13. Simplest, most obvious, and fastest form of mass wasting
    rock slide/ fall/ rock fall
  14. a winding channel that is more common than straight ones, usually with gentle and irregular curverature
    sinuous channel
  15. streams flowing outward in all directions from a central dome or peak
  16. a hydrothermal feature consisting of a surface crack that is directly connected with a deap-seated source of heat
  17. channeled movement of water along a valley bottom
    stream flow
  18. a speleothem formed through the meeting of a stalactite and a stalagmite
    a column or pillar
  19. what are the significant aspects of a floodplain
    a low-lying, nearly flat alluvial valley floor that is periodically inudated with flood waters
  20. the steps of denudation are
    weathering, mass wasting, and erosion
  21. what are the types of mechanical weathering?
    frost wedging, salt wedging, temperature changes, exfoliation
  22. how does frost wedging occur?
    upper surface of water freezes and expands, which means that the principal force of expansion is exerted against the wall of the confining rock rather than upward. the expanding wedge of ice splits the rock
  23. how does salt wedging occur?
    in dry climates, water is often drawn upward in rock openings by capillary action, this water nearly always carries dissolved salts, when the water evaporates, the salts are left behind as tiny crystals, with time, the crystals grow, prying apart the rock grain by grain
  24. how does temperature changes affect weathering?
    the fluctuation of temperature from day to night and from summer to winter can cause minute changes in the volume of most mineral particles, forcing expansion when heated and contraction when cooled. tending to break rocks apart
  25. how does exfoliation affect weathering?
    the curved layers peel of bedrock
  26. what are the types if chemical weathering?
    oxidation, hydrolysis, carbonation
  27. how does oxidation occur?
    when oxygen dissolved in water comes into contact with certain rock minerals, the minerals undergo oxidation, in which the oxygen atoms combine with atoms of various metallic elements making up the rock and form new products
  28. how does hydrolysis occur?
    the chemical union of water with another substance to produce a new compound that is nearly always softer and weaker than the original
  29. how does carbonation occur?
    the reaction between the carbon dioxide in water and carbonate rocks, such as limestone, to produce a very soluble product that can readily be removed by runoff or percolation and can also be deposited in crystalline form if the water is evaporated