GEOG 2050 Lecture : Geography Notes
Document Summary
Geodesy- the study of the shape of the earth. Latitude- lines that run east-west, parallel lines called parallels. Degrees north-south (0-90 degrees n,s) 1 degree latitude=69 miles. Equator (only parallel that is a great circle) (0) Meridians converge at the poles not parallel. Equatorial 5 n-s is within tropics 23. 5 n-s. Dimensional analysis- a method to convert from one known quantity to another, for example converting from inches to centimeters. Time zones-24 (24 hours in a day) 360 degrees in a circle/24hours=15 degrees/hour. Assume for 40n-s about 100km/degree or about 62 miles/degree. 1860 miles (work will be posted on moodle) Globe-only true representation of the distance, direction, area, shape, and proximity. Flat map distorts either equal area or true shape. Map scale- ratio of the map to the real world fig 1. 23 1. 2. Map distance=4. 65 inches and the real distance is 4650 miles. Universe formed 13. 5 to 15 billion years ago big bang theory.
