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GIS Final Exam Complete Questions And Answers Solved 100% Correct!!
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GIS Final Exam Complete Questions And Answers Solved 100% Correct!!
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GIS Final Exam Complete Questions AndAnswers Solved 100% Correct!!
2 Spatial Data Models CORRECT ANSWERS Vector and Raster
Vector Model (OBJECTS) CORRECT ANSWERS points, lines, polygons
Objects: Discrete, countable
Raster Model CORRECT ANSWERS Polygon is being divided into equal squared units,
commonly used with imagery, object is recorded to the nearest cell, large # of small cells(pixels)
Objects: Continuous, Uncountable
Georeferencing CORRECT ANSWERS Aligning geographic data to a known coordinate
system so it can be viewed, queried, and analyzed with other geographic data.
Geodesy CORRECT ANSWERS the science of measuring the shape of the earth
Leading Letter Coordinates: CORRECT ANSWERS • Use a leading letter (N/S, E/W) to indicate the direction
• Letter followed by a number to indicate location
• Latitude values: • 0 degrees (at the equator) to 90 degrees (at the poles)
• Longitude values: • 0 degrees to 180 degrees
• East and west longitudes meet at 180 degrees • W180 degrees = E180 degrees
• Example: N50 degrees, W120 degrees
Signed Coordinates: CORRECT ANSWERS • Northern latitudes are positive
• Southern latitudes are negative • Eastern longitudes are positive
• Western longitudes are negative
SEQUENCE IS IMPORTANT! CORRECT ANSWERS LAT, LONG
Latitudes: CORRECT ANSWERS -90 degrees to +90 degrees
Longitudes: CORRECT ANSWERS • -180 degrees to +180 degrees
• -180 degrees = +180 degrees
• Example: +50 degrees, -120 degrees.
Degrees-minutes-seconds (DMS) notation: CORRECT ANSWERS • Spherical coordinates
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