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Earth Science

Final Review

QuestionAnswer
Topagraphic Map map that represents the three dimensional layout of the land on a to dimensional suface. *shos orks of nature(mountains, valley, lakes, rivers, and vegation) *identify manmade features(roads, boundaries, and major buildings) *contour lines *symbols & key
Horizontal Scale *One inch on the map=24,000 inches(2,000 ft.) in the real world *one cm., foot, inch on map=24,000 of whateverthat is *Scale=1:24,000
Contour Lines lines drawn to show changes in elevation
Index Contours (bold lines) have elevations painted on them. *BEterrn each index contours are four intermediate contours that are thiner lines than the index contours.
Basics of Contour lines 1-Every point on a contour line represents the exact same elevation. 2- Contour lines can never cross 3- Moving from one contour line to another always indicates a change in elevation. 4- closely spaced contour lines indicate steep slopes
Basics continued 5- Widely spaced contour lines indicate gentle slopes 6- If the contours are evenly spaced its a constant slope 7-Series of closed contours represents a hill. If the closed contours are hachured it indicates a closed depression
Earth's radius 4,000 miles
Circumference 24,900 mies
Earth is not a sphere, it is an.. obtate spheroid
Latitude *sets of imaginary circles traveling east-west around the Earth *lines are parallel to each other *Angular distance in degrees *1 degree= about 69 miles
Longitude *Set of imaginary semicircles traveling North-South from Pole to Pole
Created by: char23
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