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13 Cards in this Set
- Front
- Back
isometric lines
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lines that connect places with the same isometric values
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isometric values
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values that can actually be measured at that point on the earth's surface
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two types of isolines
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Isometric lines
Isopleths |
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Isopleth
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line that links values which are not actually measured at a particular place but which represent a certain area
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interpolation
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the process of plotting isolines on a map using estimates
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isoline interval
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difference in value between the isolines
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isoline names:represent?
isotherm = isohyet = isobar = isohypse = |
temperature
rainfall atmospheric pressure height above sea level |
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isoline property 1
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isolines never intersect
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isoline property 2
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line separates areas with lower values than it's own from areas with higher values
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isoline property 3
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where closely spaced = steep gradient or high rate of change
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isoline property 4
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numeric value should always be indicated
values point in direction of increase value written on higher side of the isoline |
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isoline property 5
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are rounded lines, cannot simply begin and end, either joins to form continuous line, or runs off map edges (continuation would appear on adjacent map)
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isoline property 6
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lines always follow each other progressively
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