The information on these websites covers the material in the class lecture. We will strive to provide this information for each lecture. If you find a reference that you think is better than one on this list, turn in a printout of the page with your name on it. If it is indeed better than what we have, you will receive 2 points extra credit on the following exam. Our goal is to provide the equivalent of an on-line textbook that is completely free. Help us. Examine the information on the websites below for a review of today’s material, do the homework assignment on the Great Circle Mapper What is physical geography? http://geography.about.com/od/studygeography/a/geog101.htm Eratosthenes http://www.juliantrubin.com/bigten/eratosthenes.html Four Earth “spheres” http://geography.about.com/od/physicalgeography/a/fourspheres.htm Great Circles http://geography.about.com/od/understandmaps/a/greatcircle.htm GREAT CIRCLE HOMEWORK, PRINT BOTH MAPS AND ANSWER THE QUESTIONS. TURN THEM IN ON THURSDAY, BE SURE TO PUT YOUR NAME ON BOTH MAPS. http://www.gcmap.com/ Create 2 maps, from MOB (Mobile, AL) to DEL (Delhi, India). Use map path, then map range. If you need compass headings to steer by, which map should you use? Perihelion and aphelion http://www.ehow.com/about_4586467_what-earths-perihelion-aphelion.html Earth-sun relations http://www.youtube.com/watch?v=taHTA7S_JGk#t=315 References for future lectures Latitude and longitude http://nationalatlas.gov/articles/mapping/a_latlong.html