1. Topographic Maps

2. Topographic Map: Topographic Map: – A contour map -

3. Complicated Topographic Map

4. Simple Topographic Map I am standing where the land meets the water, what is this called?

5. *All elevations are relative to sea level 0 meter contour line

6. Profile View of Island Sea Level 0 meters Sea Level rises 5 meters during the night Sea level Rises another 5 meters Black paint

7. Profile View of Island 0 meters Sea Level Rises another 5 meters A total of 15 meters

8. 0 meters 5 meters 10 meters 15 meters

9. How would the island look from the Helicopter with the black lines? 15 m 0 m 10 m 5 m What are the values for the lines? Top View of the Island

10. Contour Line Features

11. Which side of the island is steeper? N S

12. 15 m 0 m 10 m 5 m What do you notice about the contour lines? North South

13. Gradient: Steep -- Gentle -- Gentle Steep

14. 15 m 0 m 10 m 5 m What is the elevation difference between the two locations? Contour interval – A B 5

15. 15 m 0 m 10 m 5 m What is the value of each location? C A E D B Location A B C D E Elevation _ _ _ _ _

16. Reading Topographic Maps

17. How to use a map scale 15 m 0 m 10 m 5 m 1 KM

18. Map Scales Ex: 1:24,000 One unit on the map equals 24,000 units on Earth’s surface What about 1:100,000?

19. Reading Topographic Maps Contour lines are not all labeled

20. Index contour - Intermediate contour – What is the contour interval on this map?

21. Concentric circular contour lines represent a hill or mountain

22. Depression --

23. Benchmark __

24. River or Streams What direction do rivers flow?*-* What do you notice about the shape of the contour lines on this map?

25. “V” pattern contours show a river or stream valley. “V” pattern contours show a river or stream valley. “V” - “V” - Rivers flow downhill

26. Which direction is the river flowing? E W N S http://www.polleverywhere.c om/multiple_choice_polls/MT IzNDQ1MTM0MQ/web