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Chapter 2 Sections 2-3 Pages 33-40

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.

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Chapter 2 Sections 2-3 Pages 33-40

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

  2. 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.

  3. 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)

  4. 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

  5. Cartography Video

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

  7. 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

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

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