Name Lab 2 Maps and Google Earth Required materials Pencil Topographic map of “Arthur Kill” (pdf on Blackboard) Computer with Google Earth software loaded (see lab 1) and Adobe Acrobat Reader with TerraGo Toolbar (see pre-lab) OR your instructor can tell you how to access these on the library computers. Pre-lab reading and quiz Read the information in the following documents about topographic maps: (you don’t need to do the exercises on this last one – just read the information) Go to an download and install the free toolbar for Adobe Acrobat Reader. What types of features are indicated using the following colors? Green Brown Blue Black Red Name List and explain 5 pieces of information you would expect to find in the map margins What does a line of latitude look like on the map? What is the maximum value possible for a line of latitude? What does a line of longitude look like on the map? What is the maximum value possible for a line of longitude? Which UTM zone is Staten Island located in? What is the spacing of UTM grid lines on a 7.5 minute quadrangle map? How would you determine the contour interval if it was not written in the map margin? How do the contours differ between a steep slope and a shallow slope? Name In-class lab exercises Part 1 Topographic maps What are the contour intervals in the diagrams below? (assume the scale is in feet) 180 600 170 160 1400 0 550 150 1000 ________________ _____________________ ________________________ Match the following contour maps with the descriptions. A C B 150 600 100 100 400 200 50 200 D E 200 F 200 100 100 200 100 Name Descriptions Dry valley Hilltop Steep slope Valley with stream Spur Shallow slope Draw an arrow in the diagram to indicate the direction the stream is flowing. Next, you will be working with the “Arthur Kill” topographic map quadrangle. Download this map from Blackboard, and view it in Adobe Acrobat Reader with the TerraGo toolbar installed. What is the scale of the map, expressed as a ratio? How many inches represent 1 mile? How many feet are represented by 1 inch? What is the contour interval of the map? From which series is the map? When was the map made? When was it photorevised? What is the latitude of the northern boundary of the map? What is the latitude of the southern boundary of the map? Name What is the longitude of the eastern boundary of the map? What is the longitude of the western boundary of the map? Which maps border the Arthur Kill Quadrangle? North South East West Northeast Southeast Northwest Southwest Use the guide to UTM coordinates and the key to symbols on topographic maps that you downloaded during the pre-lab to help you answer the following questions. Using the information you learned earlier about contour lines, find an example of each of the following features on the Arthur Kill map. Give the UTM coordinates of the feature you have found. If you have installed the TerraGo toolbar, the coordinates appear at the bottom right of the screen. Hilltop Dry valley Valley with stream Shallow slope Spur Steep slope Name Find the location of 71224 86689 on your map and mark it as point 1. What is the land-use of the surface at this location? Find the location of 70367 90790 on your map and mark it as point 2. What is the land-use of the surface at this location? Part 2 Google Earth Open the Google Earth Pro software on your computer, or sign into a library computer and use Google Earth Pro there. You cannot complete this exercise using the web or mobile versions of Google Earth. In the ‘search’ box type ‘Staten Island’. Zoom in and center the image, so that you can clearly see the whole island. For the next part of the exercise, you need Google Earth to display UTM coordinates, rather than lat/long. Select “Tools” then “Options”. In the dialog box, change the “Show lat/long” category to “Universal Transverse Mercator” and save the settings. Now, you will place the same 2 points on your Google Earth map. Point 1 Point 2 Easting 571224 570367 Northing 4486689 4490790 Select the “Placemark” tool, and label your first placemark “Point 1”. Type in the Easting and Northing then click OK. Repeat for point 2. Name Zoom in so that you can clearly see both points. Does the image support the land use you deduced from the map key? Explain why or why not. Then use the ruler tool to draw a topographic profile. Select the “Ruler” tool, and click on the “Path” tab. Check the box for “Show elevation profile”. Then draw your straight line path starting at point 1 and ending at point 2. You should see the topographic profile beneath your map. In order to save this image, click on “Edit” then “Copy image”. Open a blank word document, change the page orientation to “landscape” and paste the image. Label the ends of your profile with the UTM coordinates. You should have both the map and the profile. Include this page with your lab.

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