Science

2. computer system that analyzes and displays geographically referenced information.
4. the use of elevation contour lines to show the shape of the Earth's surface
6. a list of symbols that appear on the map
7. an imaginary line drawn around the earth equally distant from both poles, dividing the earth into northern and southern hemispheres
9. an area of relatively level high ground
11. a large area of flat land
14. difference in elevation considered collectively, of a land surface
15. bold or thicker lines that appear at every fifth contour line
16. the angular distance of a place north or south of the earth's equator

1. he rise or fall of the land surface.
3. distance on a map and the corresponding distance on the earth
5. a large natural elevation of the earth's surface rising abruptly from the surrounding level; a large steep hill
8. distance above sea level
10. an accurate worldwide navigational and surveying facility based on the reception of signals from an array of orbiting satellites
12. the difference in elevation represented by each contour line on a topographic map
13. the angular distance of a place east or west of the meridian