Geog 210 Exam 2

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Author:
kamrunsreno
ID:
189138
Filename:
Geog 210 Exam 2
Updated:
2012-12-12 17:40:55
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Arc GIS
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final exam study material
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  1. Prime Meridian
    If you were at 0 degrees longitude you would be standing on the prime meridian
  2. Equator
    If you were at 0 degrees latitude you would be standing on the equator
  3. The term used to describe a projection which ctrols for angle and shape is:
    Conformal
  4. The equation for computing the length of a line or the distance between two points is:
    line length= sqrt((x1-x2)^2+(y1-y2)^2)
  5. Using a computer to draw lines, points or polygons into a georeferenced dataset is
    digitizing
  6. What is the term we, geotechnology people, use to describe phenomena that occur over both space and time
    Spatio-temporal
  7. Data about other data of any sort in any media is
    metadata
  8. Describe four of the main types of geotechnology described in class
    • Remote Sensing-creating data without actually making contact with the area of interest
    • Computer Cartography- Making maps on a computer
    • GPS- uses a series of satelites orbiting in space to locate the GPS device
    • GIS- Geographic information system- System that has the ability to create layers of people, buildings, geography geology etc. on a map to analyze
  9. Nine major components of a map
    • Title
    • Legend
    • Scale
    • North Arrow
    • Discription
    • BOarder
    • Credits
    • Source
  10. Five potential things a map projection may distort
    • Area
    • Angle
    • Space
    • Direction
    • Distance
  11. What is a Geoid and how is it different from a spheroid?
    A geoid is very similar to a spheroid, but not a true spheroid because it has irregularities. Earth is a Geoid because it has mountain peaks and low Oceanic valleys
  12. What is the difference between a coordinate system and a projection?
    A projection distorts areas on earth since it's on a flat surface and a coordinate system on a map can be used to tell us where we are
  13. In geography what may the word scale be used to describe
    The distance in units on a map compared to the actual units on earth. Also, it can be used to describe time and resolution

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