Chapter 2 Sections 2-3 Pages 33-40

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Chapter 2 Sections 2-3 Pages 33-40
Essential Question: How were the regions of Texas identified?

Objectives Compare 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.

Making the Earth Fit on a Page
Maps are models of actual areas Maps are drawn to scale Scale: relationship between a distance on a map and the actual distance it represents Example: 1 inch = 100 miles Ways to show scale Bar graph, written scale, fractional scale (see page 34)

Cartographers Cartographer: a person who makes maps
Read Then and Now on page 35 Geradus Mercator (page 33) How do cartographers fit a round surface onto a flat map? By using map projections to eliminate distortions See picture on page 35 Projection: the transfer of an image of a curved surface onto a flat surface Plane (used for polar areas) Cylinder (below the equator areas) Cone (between polar and low-latitude areas) Texas is best displayed using a cone projection

Cartography Video

Common Map Features Map title Scale Location Symbols Legend (Key)
Legend: an explanation of a map’s symbols and scale

Types of Maps General-Purpose Maps
Physical Maps: map that shows the natural features of an area They show the topography: features of the earth’s surface and relationship to each other in terms of location and elevation Example: mountains, valleys, rivers, lakes Also called elevation maps Use different colors to represent differences Political Maps: map that shows boundaries in an area Shows boundaries between counties, states, countries, etc Also identify towns, cities, national parks, state capitals, etc Physical-Political Maps: shows both topography and boundaries Most classroom maps

Special-Purpose Maps Show info about a specific topic
Example: military maps, historical maps, city street maps, natural resource maps, etc