9/26/18

Today we talked a lot more about maps. This class wasn't  a discussion class like the past week of classes have been. We actually learned about the evolution of maps and measurements of maps. The earliest maps were reference tools which were simple navigation devices to show a traveler how too get from point a to b. The first world map was prepared by Eratosthenes (276-194BC). Then later improvements to the map were made by Ptolemy. We learned a lot about map scale. Map scale can be written out in three ways. Ratio/Fraction scale is 1/2,400. Written scale is 1 in=1 mile. And the graphic scale is what the bar line usually is called. Most of the time because earth has a spherical shape, it causes distortion on a flat map. It distorts the shape of an area, the distance can be increased or decreased, relative sizes of areas can be altered, and direction between points can be distorted.