1Chapter 2 Sections 2-3 Pages 33-40 Essential Question:How were the regions of Texas identified?
2ObjectivesCompare and contrast the different methods of showing scale.Analyze map characteristics to determine the type of map projections.Interpret information from different types of map projections.Compare/contrast general-purpose and special-purpose maps.Categorize maps as being either general-purpose or special-purpose.Infer information about maps.
3Making the Earth Fit on a Page Maps are models of actual areasMaps are drawn to scaleScale: relationship between a distance on a map and the actual distance it representsExample: 1 inch = 100 milesWays to show scaleBar graph, written scale, fractional scale(see page 34)
4Cartographers Cartographer: a person who makes maps Read Then and Now on page 35Geradus Mercator (page 33)How do cartographers fit a round surface onto a flat map?By using map projections to eliminate distortionsSee picture on page 35Projection: the transfer of an image of a curved surface onto a flat surfacePlane (used for polar areas)Cylinder (below the equator areas)Cone (between polar and low-latitude areas)Texas is best displayed using a cone projection
7Common Map Features Map title Scale Location Symbols Legend (Key) Legend: an explanation of a map’s symbols and scale
8Types of Maps General-Purpose Maps Physical Maps: map that shows the natural features of an areaThey show the topography: features of the earth’s surface and relationship to each other in terms of location and elevationExample: mountains, valleys, rivers, lakesAlso called elevation mapsUse different colors to represent differencesPolitical Maps: map that shows boundaries in an areaShows boundaries between counties, states, countries, etcAlso identify towns, cities, national parks, state capitals, etcPhysical-Political Maps: shows both topography and boundariesMost classroom maps
9Special-Purpose Maps Show info about a specific topic Example: military maps, historical maps, city street maps, natural resource maps, etc