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E.S. Unit 1
Measuring the Earth
| Term | Definition |
|---|---|
| topographic map | a map that shows the surface features of an area |
| isoline | map line that connects points of equal or very similar values |
| gradient | a rate of inclination; a slope |
| map profile | a side view of the land that shows a single slice of the land |
| International Date Line | 180 degrees longitude |
| benchmark | a process of continuously measuring and comparing those results to benchmark values |
| parallels | lines of latitude |
| meridians | lines of longitude |
| contour interval | the change in elevation from contour line to contour line |
| contour line | a line on a topographic map that connects points of equal elevation |
| map scale | the part of a map that helps you find distance |
| map projection | a systematic method of transferring a spherical surface to a flat map |
| latitude | distance north or south of the equator |
| longitude | distance east or west of the prime meridian |
| depression contour | a line that shows a decrease in elevation on a topographic map; marked by hatches on the line |
| oblate spheroid | shape of the earth, a slightly flattened sphere |
| Eratosthenes | (276-195 BC) Greek who showed that the Earth was round and calculated the circumference |
| time zone | 24 regions or divisions of the globe approximately coinciding with meridians at successive hours from the observatory at Greenwich, England. Each is 15 degrees longitude |
| relief map | a map that shows the differences in elevation in an area |
Created by:
WGZimm
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