The SandBox Lesson 2 – Intermediate Topography Lesson Summary



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  1. Next, another person in the group should place another piece of string along the steepest route between the same start and end points.




  1. Once you have placed the string along this route then use the ruler to measure its length and count the number of contours along the route. Place the numbers in the table above for the steep route.




  1. If needed use photo log sheet and note taking sheet


AT THE END, SHOW YOUR TEACHER THAT YOU HAVE COMPLETED MEASURED THE LENGTH OF THE STRING AND CONTOURS FOR EACH ROUTE.
Explore 3: Use Google Earth to measure profiles
Google Earth


  1. Obtain the KMZ file for Google Earth from your teacher. Ask for the file that is specifically for your group.




  1. Double click on the file and Google Earth will open, see below.



  1. Double click in the centre of the image to zoom into the map, see below.



  1. Choose the add path option from the top bar,




  1. Select a start point by clicking on the map in Google Earth, then make a path with three more points. Highlighted below in the red circle.





  1. Next, you can change the color and width of the file and rename it. Using the window below:, you can add a new name, Style/Color. Choose a bold color and set the width = 4.0





SHOW YOUR TEACHER THAT YOU HAVE A PATH.


  1. Next you will want to show the elevation profile along this path. Right click on the path in the Temporary places window, see below.





  1. This will load the profile along the path, see example below.





  1. Record the following values for this path in the table below.




Topographic Parameter – Path 1

Value

Distance (km)




Elevation Gain (m)




Elevation Loss (m)




Minimum Elevation (m)




Average Elevation (m)




Maximum Elevation (m)




Max positive Slope (%)




Max negative Slope (%)




Average positive Slope (%)




Average negative Slope (%)





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