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Understanding Topographic Maps: Interpreting Earth's Surface Features

Explore how topography is shaped by weathering, transportation of sediment, and deposition. Learn to read contour maps to identify landforms, elevation, and slope. Practice using scales, symbols, and interpreting contour lines. Check your understanding of surface features. Enhance your map reading skills!

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Understanding Topographic Maps: Interpreting Earth's Surface Features

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  1. Exploring Earth’s Surface Chapter 1 Section 4

  2. Standard • 6.2 Topography is reshaped by the weathering of rock and soil and by the transportation and deposition of sediment.

  3. Anticipatory Set • Color the Contour map that was given to you according to the directions on the bottom.

  4. Language of the Discipline • Topographical Maps • Contour Line • Contour interval • Index contour

  5. Mapping (Input) • Mapmakers use contour lines to represent elevation, relief, and slope on topographical maps • Contour line- connects points of equal elevation • Contour interval- the change in elevation from contour line to contour line • Look at page 29 • Index contours- labeled with the elevation in round units. How any meters above sea level

  6. Mapping (Input)

  7. Topographic Maps (Input) • Used to identify landforms • To read a topographic map, may must familiarize yourself with the map’s scale and symbols and interpret the map’s contour lines

  8. Topographic Maps (Input)

  9. Scales, Symbols, Interpreting Contour Lines • Scales- use large scale maps • Close up view of Earth’s surface • Symbols used to show houses and other small features • Symbols • What symbols would you use to represent a forest, campground, swamp, or school? • Interpreting Contour lines • Find the elevation of a feature, begin at the index contour (heavier line), then count the number of contour lines up or down to the feature.

  10. Interpreting Contour Lines • Closely spaced lines- steep slopes • Widely spaced lines- gentle slopes/flatter areas • It also helps to show ridges and valleys. (V shaped) • If they point downhill it is showing a ridge • If they point uphill it is showing a valley • A stream will flow towards to the opening at the end of the V.

  11. Checking For Understanding • Topographical maps show what?

  12. Surface features of an area

  13. Checking For Understanding • Elevation, relief, and slope on a topographic map are shown using symbols called?

  14. Contour lines

  15. Checking For Understanding • The change in elevation from contour line to contour line is called what?

  16. Contour interval

  17. GP and IP • Guided Practice • #1-3 • Stop!!! You must have a stamp to keep going! • Independent Practice • #4-6 • Homework • #7-end

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