GEOG 2050 Chapter : Geography 2050
Document Summary
Geodesy: the study of the shape of the earth, geoid- mean sea level surface, fig. Dimensional analysis: a method to convert from one known quantity to another, for example converting from inches to centimeters, the key is the units, example in moodle. Time zones: generally go with the lines of latitude, 15 degrees per hour, 360 degrees in a circle/24 hours = 15 degrees/hour. Maps: globe- only true representation of the distance, direction, area, shape, and proximity, flat maps either equal area or true shape, cylindrical projection, fig. Great circle: any line that passes through the center of the earth. Small circle: doesn"t pass thru the center and is always smaller than the great circles, fig. Map scale: ratio of the map to the real world, fig 1. 23, map distance= 4. 65 inches and real distance is 4650 miles, what is the scale, 1 inch=1000 miles.
