# What do maps show us? - PowerPoint PPT Presentation

What do maps show us?

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What do maps show us?

## What do maps show us?

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##### Presentation Transcript

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

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

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

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

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

15. 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

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

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

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

19. Sea Level ocean

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