Name: ________________________________________________ Date: ________________ A topographic map is a two-dimensional (flat) representation (model) of a three-dimensional land surface (landscape). It shows landforms (hills, valleys, slopes, coastlines, gullies) and their relief (difference in elevation) by using contour lines to represent elevations of hills and valleys. The contour lines are the distinguishing features of a topographic map. They are what make a topographic map different from the more familiar planimetric map, such as a highway map, which has no contour lines and does not show relief of the land. Yet topographic maps still have many of the features of the planimetric maps (roads, buildings, streams, etc.). Busch, (2011) AGI Part 1: Understanding Topographic Maps (5 pts) 1. Label the elevation of the contours on the map below. Watch out for depressions with repeated contours! Contour Interval = 20 m 2. Use interpolation and extrapolation to estimate and label elevations of all points below that are not labeled (see
Name: ________________________________________________ Date: ________________ A topographic map is a two-dimensional (flat) representation (model) of a three-dimensional land surface (landscape). It shows landforms (hills, valleys, slopes, coastlines, gullies) and their relief (difference in elevation) by using contour lines to represent elevations of hills and valleys. The contour lines are the distinguishing features of a topographic map. They are what make a topographic map different from the more familiar planimetric map, such as a highway map, which has no contour lines and does not show relief of the land. Yet topographic maps still have many of the features of the planimetric maps (roads, buildings, streams, etc.). Busch, (2011) AGI Part 1: Understanding Topographic Maps (5 pts) 1. Label the elevation of the contours on the map below. Watch out for depressions with repeated contours! Contour Interval = 20 m 2. Use interpolation and extrapolation to estimate and label elevations of all points below that are not labeled (see
GEO144_lab_3_key.docx