What do maps show us? - PowerPoint PPT Presentation

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What do maps show us?
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What do maps show us?

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  1. What do maps show us? What can we not see on flat, two-dimensional maps?

  2. Topographic Maps

  3. Topographic Maps A topographic map is used to show the __________________of an area elevation

  4. Contour Lines A contour line connects points of ____________elevation on a field map equal

  5. 0 10 40 20 30

  6. Contour Lines are Continuous They never end!

  7. Contour Lines can NEVER CROSS Contour lines are _______________ parallel

  8. Why can contour lines never cross?

  9. Topographic Profile side A topographic profile is a _________ view of a landscape

  10. Cross sectional view of a line drawn through a topographic map

  11. Topographic Profile Contour line (side view) (top view)

  12. Contour Interval difference A contour interval is the ______________in _______________ between consecutive contour lines elevation What is the contour interval for this map?

  13. Contour Interval The highest elevation can be found within the highest _____________________ contour line What is a possible elevation for this point?

  14. Slopes The distance between contour lines indicate the ________________ of the slope steepness Steep Closer together = steeper slope Farther apart = gentler slope Gentle

  15. Depressions decreases A depression is an area on land that ___________ Depressions are represented by hachured contour lines Hachured Lines

  16. Depressions first • The __________hachured line is equal to the last regular contour line. • The ____________hachured line goes ___________by one contour interval. second down 60 m 50 m

  17. Benchmark A benchmark is a position where the ___________ elevation has been measured exact 82

  18. Streams “V” Contour lines form a ________ shape that point upstream

  19. Sea Level land water Where the ____________ meets the ____________ - has an elevation of zero

  20. Sea Level ocean

  21. 0 Contour Map 10 20 30 40 A B 43 43 40 30 Profile 20 10 A’ B’ 0