Geography 1100 Lecture Notes - Lecture 4: Map Projection, Unit, Cartogram

• School: Western University
• Department: Geography
• Course: Geography 1100
• Professor: Barry Tepperman

Document Summary

Earth revolves around the sun in an elliptical orbit. > earth and moon have a common centre of mass (baycentre) > 2 high tides and 2 low tides. > neither high nor low tides are constant. > 27 days to complete one moon cycle. > 150 per hour is the movement of the sun over the earth. > 150 of longitude = 1 hour of time [3600/24h = 150/hr] > people have created and used maps as essential tools to help them define, explain, and navigate their way through the world. > maps are engines that convert social energy to social work social energy --> map --> knowledge. > represent the curvature of the earth and represent it as a flat surface, > each map projection had its own limits and should be used only for the purposes for which it is intended. > conformal - true shape for small area.