spring08test2studyguide

spring08test2studyguide - EXAM 2 Study Guide TOPOGRAPHIC...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
EXAM 2 Study Guide TOPOGRAPHIC MAPS Topographic maps illustrate the lay of the land by means of elevation lines (countour lines), colors and symbols. They represent the 3 dimensional world on a 2 dimensional surface. The most common topo maps are produced by the United States Geological Survey and cover 7 ½ minutes of latitude and longitude. Latitude- Measure of the distance from the earth’s equator. Longitude- Measure of the distance east or west of the Prime Meridian, which runs through Greenwich, England The units of Lat and Long are the Degrees, Minutes, and seconds, and are based on a scale of 60. contour lines- on topographic maps they connect areas of equal elevation. (On other maps they can connect equal values of anything) Rules of contouring 1. Contour lines never cross each other 2. Contour lines never split or merge except at vertical cliffs (very rare) 3. A contour line passes directly through a point only if its value is exactly that of the contour line Contour lines (on topo maps) close together represent steep locations, contour lines far
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/07/2008 for the course GEOL 111 taught by Professor Downing during the Spring '08 term at WVU.

Page1 / 3

spring08test2studyguide - EXAM 2 Study Guide TOPOGRAPHIC...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online