Topographic Maps Topographic Maps: ____________ 6. 4. 2. 5. 3. 1. Topographic Maps: ____________ ______________________________ Contour Lines:________________ _____________________________ Contour Interval:_______________ Index Contour: _______________ Hachure: ___________________ V-Shaped contours: Downhill: ___ Uphill: ________________________ Hilltop: ______________________ Closely spaded: __________ ________________________ Widely Spaced: __________

Analysis Questions What is the exact elevation of the following points? point A = _____ meters        point E = _____ meters 2. What is the approximate elevation of the following points?         point C = _____ meters        point F = _____ meters 3. Explain why you can determine the exact elevation for points A and E but only approximate elevations for points C and F. 4. How many hills are shown on the map? 5. In which direction is the Ert River flowing? 6. Which letters on the map have the same elevation? 7. What does the line the X is on represent? On the map, how do you know if elevation is increasing or decreasing? Label the highest elevation of Molen Lake? Label the lowest elevation of Molen Lake? X

Topographic Maps What is topography?

Topographic Maps Do not copy! Topography: Physical features on a map Examples: Mountains, hills, and valleys

Topographic Maps Topographic maps: map that uses contour lines to represent 3D images of physical features in a given place. Why would anyone need to use these?

Topographic Maps Contour lines: lines that connect points of equal elevation (THEY NEVER CROSS)

Topographic Maps Contour interval: change in elevation from one line to another

Topographic Maps Index Contour: Thicker line that has the elevation labeled (EVERY 5 LINES)

If I were the walk along a contour line, what would happen to your elevation?

Topographic Maps Hachure: Closed loop with dashes inside that show a decrease in elevation, called a depression V-Shaped Contours: Represent rivers flowing DOWNHILL

Topographic Maps Hilltop: Form a closed loop with no other contour lines in side Closely spaced contour lines represent steep slopes. Widely spaced contour lines represent gentle slopes.

Try these examples!

What is the contour interval? Which lines are index contours?

List the elevation for: A: ___ B: ___ C: ___ D:____

List the elevations for A: ____ B: ____ C: ____ D: ____ E: ___