1 Chapter 2 Sections 2-3 Pages 33-40 Essential Question:How were the regions of Texas identified?
2 ObjectivesCompare 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.
3 Making 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)
4 Cartographers 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
7 Common Map Features Map title Scale Location Symbols Legend (Key) Legend: an explanation of a map’s symbols and scale
8 Types 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
9 Special-Purpose Maps Show info about a specific topic Example: military maps, historical maps, city street maps, natural resource maps, etc