Activity:
1. Go to the Map interface for the aerial collection and do a Basic Search on a town in Florida.

2. Click on the "Zoom to these Records" link.

3. Click on a Rec (record) number in the database. The dot representing that aerial will turn red. Click on the camera icon to view that aerial. Choose an aerial that includes some type of distinguishing feature(s), e.g., roads, buildings, lakes, etc.

4. Write down the latitude _______________ and longitude______________ for the image you select. Example: 29/47/51N, 82/09/54W

5. What year was the photograph taken?_________

6. Zoom into the aerial until you can see details (approximately 50%) and print it using your browser print command.

You now have a snapshot of the past. Let's compare it to a more recent photograph.

7. Open another session of Internet Explorer and go to the Terraserver site at http://terraserver-usa.com/default.aspx.

8. Click on "Advanced Search" and then on "Advanced Find."

9. Under Advanced Find, click on "Geographic" and type in the degrees, minutes, and seconds that you have recorded above for latitude and longitude and click "Geographic Search."


10. Once the image displays, change the MAP SIZE to large.

11. What is the date of the photograph?___________ Using the earlier historical aerial as a guide, zoom in on the image until you can match features. HINT: Look for road intersections.

12. Print the image, using the Terraserver Print botton at the top, not your browser print.


13. Now change the "VIEW" drop down menu to Topo Map and print this image too. NOTE: Topo maps are easier to interpret in color, but black and white can be used.

The symbols on the Topo Map will help you to interpret what you
are seeing in the aerials. Use the following US Geological Survey map symbol interpretations to help you: Elevation , Boundaries , Land Surface Features , Water Features , Buildings and Related Features , Roads, Railroads, and Other.

14. In the space below, compare and contrast the changes that have occurred between the time the first aerial was taken and the second.