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11 Cards in this Set
- Front
- Back
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what does the altitude of Polaris indicate?
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the observers latitude. Also proves earth's shape
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What is the prime meridian?
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The reference line for longitude and for Greewn wich mean time.
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How does time change as you move east from the prime meridian?
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it is an hour later with every 15 degrees
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what is the chronometer
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clock used to determine longitude keeping time atthe Prime Meridian and solar noon time.
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cyclic change
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events that follow set patterns and seem to repeat themselves
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What is the equation for gradient or slope?
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gradient= change in value /change in distance
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what is percentage error or percent deviation?
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the amount of error in a measurement expressed as a percent
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isobars
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isolines joining points of equal barometic pressure
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contour line
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lines joining points of elevation
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How are depressions shown on a contour map?
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Depressions, or holes are indicated by hachured lines. Each line indicates a contour interval lower
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topographic map
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a two dimensional model which shows the elevations of various points
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