Open the USGS Earth Explorer interactive map. Scroll down to reveal the map's zoom feature. At the top right corner of the map, select Overlays and then DMS. DMS stands for degrees, minutes, and seconds, which is a more precise way of measuring latitude and longitude than you were using in the map in parts A–C. The degrees of latitude and longitude that you identified on the previous map are helpful for identifying large areas, such as states and countries. However, one degree of latitude or longitude can equal approximately 60 miles. Therefore, using degrees, minutes, and seconds is a more precise way of measuring a smaller region, such as a small town or a single building. Using the dynamic counter at the top-right of the interactive map, the zoom feature, and your mouse cursor, find the number of minutes (‘) in a degree and the number of seconds (“) in a minute.

Hint: Begin by zooming in on a random area on the map. Then move your curser to a spot where the minutes for latitude or longitude read 00’. Watch the minutes change as you slowly move your cursor. Zoom in further and do the same for seconds.