review on section 1

Today in class we had a review day and went over the main ideas of section 1. Some of the main ideas covered in this section were maps, gps, telling time around the world, location, and regions. Eratosthenes created the first world map and Ptolmy had some additional improvements later in history. There are mainly three different maps of the world that we use today, Mercator, Peters, and Robinson. We talked about the distortion caused when mapping the world because it is hard to map something spherically shaped like Earth on a flat surface. This can affect the shape of areas, distance, size, and direction between points. Latitude and Longitude are used to describe where areas are located. The Earth is also split up into 24 different time zones and each 15 degrees of longitude has its own time zone. We learned that the prime meridian passes through Greenwich, England and is the master reference of time for all points on Earth.