1. Topographic Maps

2. Topo Maps Topographic maps :
show elevation of the land using contour lines.
takes 3D landscapes and represents them in a 2D fashion.
have a variety of uses, from planning the best route for a hike to determining a location for a school or an airport.

4. Parts of a Topo Map Name of the Map Direction Latitude and Longitude
Scale
Contour Lines
Contour Interval

5. Name of the Map
Located at the top
right of the map.

6. Direction
Look for the north arrow.
N E W S

7. Latitude and Longitude
Located on the edges
of the map.

8. Scale
A representative
distance on the earth’s
surface.

9. Contour Lines Lines of equal elevation THEY NEVER CROSS
Close = steep surface.
Spread apart = gentle surface

10. Contour Interval
The change in elevation from contour line to another contour line.

11. Earth Science Notes A. Topographic Maps B. Contour line
Shows the elevation of the land y using contour lines, and shows other natural and man-made features. S
B. Contour line
Lines of equal elevation.
Elevation – distance above sea level.
Contour Interval - The change in elevation from contour line to another contour line.
Index Contour Line – Thick contour line that gives elevation.

12. Earth Science Notes Depression
Bench Mark – A point of known elevation from which all other points are measured.
Spot elevation
1. contour interval
2. depression
3. index contour interval
4. 20 ft ft
6.east
7.closer together 8.