For each of the below locations, answer the questions based on what you observe. Directions:
Go to http://earthexplorer.usgs.gov.
Type the name of the location (ex: "Enchanted Rock") in the "Feature Name" search bar on the left side of the page and click "Show."
Click on the link that appears below the search bar.
In the upper right corner of the map, click on the "Map" button (looks like a stack of layers), and make sure "The National Map" is checked. (Note: if the program will not let you select "The National Map," then start over by typing in the location again.)
Zoom in to the location on the terrain map (contour lines will appear), and answer the following questions.
Enchanted Rock
What is the elevation of the highest point of the hill? ________________________
What is the elevation of the area where the Base Trail and the Turkey Pass Trail intersect to the northeast at the base of the hill? ________________________
What is the relief (difference in elevation) from the Base Trail – Turkey Pass Trail intersection to the summit of Enchanted Rock (subtract the lowest elevation from the highest)? __________________
Which side of the hill is the steepest? How do you know?
Palo Duro Canyon (Texas)
Using the key of map symbols on page 3, what type of river is the Prairie Dog Town Fork Red River? ________________________
What type of river is Battle Creek (north of Praire Dog Town Fork Red River at the marker for Palo Duro Canyon)? ________________________
Sealy (Texas)
How many contour lines can you see in this area, a lot or just a few? ________________________
What is the elevation of this area? ________________________
What does the number of lines tell you about the terrain?