Topographic Maps•Topographic Maps: ____________ ______________________________________________________________________________________________________________________________________________________

•Contour Lines:__________________________________________________________________________

•Contour Interval:_________________________________________________________________________

•Index Contour: _________________________________________________________________________

•Hachure: _____________________________________________________________________________

•V-Shaped contours: Downhill: ________________________________Uphill: _____________________________________________________

•Hilltop: ______________________ ______________________________

•Closely spaded: __________ ________________________•Widely Spaced: __________________________________

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Analysis Questions1. 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?

8. On the map, how do you know if elevation is increasing or decreasing?

9. Label the highest elevation of Molen Lake?

10. Label the lowest elevation of Molen Lake?

X

Topographic MapsWhat 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: Close 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: ___