A) B)

C) D)

1. The topographic map below has a contour interval of 20 feet. Points A and B represent locations onEarth's surface.

Which profile best represents the topographic cross section along the line from A to B?

A) faster, and in the same general compassdirection

B) faster, and in the opposite general compassdirection

C) slower, and in the same general compassdirection

D) slower, and in the opposite general compassdirection

2. The contour map below shows a lake and riversystem. The Birch and Elk Rivers carry an equalvolume of water.

Compared to the Elk River, the Birch River can bestbe described as flowing

A) B)

C) D)

3. The map below shows part of a stream drainage pattern.

Which topographic map best shows the contour lines for this stream drainage pattern?

A) B)

C) D)

4. The topographic map below shows a depression contour line on Earth's surface.

Points A, B, C, and D represent surface locations. Contour line elevations are in feet.

Which profile best shows the topography along line AD?

Base your answers to questions 5 through 8 on the topographic map below and on your knowledge ofEarth Science. Points A, B, C, and D represent locations on the surface of Earth. Elevations aremeasured in feet.

A) B)

C) D)

5. Which cross section represents an accurate profile of the landscape between points C and D?

A) 228 feet B) 242 feet C) 255 feet D) 268 feet

6. What is a possible elevation for the surface of Darry Lin Lake?

A) 25 feet per mile B) 50 feet per mileC) 75 feet per mile D) 100 feet per mile

7. What is the approximate gradient from point A to point B on the map?

A) northeast B) southeast C) southwest D) northwest

8. In which general direction does Red Creek flow?

Base your answers to questions 9 through 11 on the topographic map below. Points A, X, and Y arereference points on the map.

A) 50 m/km B) 100 m/km C) 150 m/km D) 300 m/km

9. What is the approximate gradient along the straight dashed line between points X and Y?

A) southwest B) southeast C) northwest D) northeast

10. In which general direction does Flint Creek flow?

A) 575 meters B) 600 meters C) 655 meters D) 710 meters

11. What is a possible elevation of point A?

A) using a contour interval of 10 feetB) plotting points A through H the same distance apart horizontallyC) drawing a curved line instead of a straight line from point B to point CD) increasing the elevation from point F to point H

12. A topographic map and an incorrectly constructed profile from point A to point H on the map areshown below.

What mistake was made in the construction of this profile?

13. Base your answer to the following question on the contour map below, which shows a hill formed byglacial deposition near Rochester, New York. Letters A through E are reference points. Elevations arein feet.

A) AE and EB have the same gradient. B) AE has a steeper gradient than EB.C) CE has a steeper gradient than ED. D) CE and AE have the same gradient.

Which description best compares the gradients of this hill?

A) northeast B) northwestC) southeast D) southwest

14. The topographic map below shows part of a stream.

In which general direction is the stream flowing?

A) 55 B) 57 C) 68 D) 70

15. Point X is a location on the topographic map below. Elevations are measured in meters.

What is a possible elevation, in meters, of point X?

16. Base your answer to the following question on the topographic map below. Points X, Y, and Z arelocations on the map. Elevations are expressed in meters.

A) B)

C) D)

Which profile best represents the topography along the dashed line from point X to point Y?

Base your answers to questions 17 through 20 on the map below, which shows elevations in feet atvarious points. The southern part of the map has contour lines representing elevations at 20-footintervals. Lines AB and CD are reference lines on the map.

17. Explain how the contour lines indicate the direction of flow of Otter Creek.

18. Calculate the gradient along line CD and label your answer with the correct units.

19. On the grid below, construct a topographic profile along line AB by plotting the elevation of each contour line that crosses line AB. Connect the plots with a line to complete the profile.

20. On the map, draw contour lines for the 780-ft, 760-ft, and 740-ft elevations. Extend your contourlines to the edges of the map.

Answer KeyES CONTOUR PRACTICE

1. D2. A3. A4. A5. A6. B7. A8. C9. C10. D11. C12. B13. B14. C15. B16. B17. — Contour lines

bend upstreamforming a V-shape.— Streams flowfromhigher-elevationisolines tolower-elevationisolines. — Isolinesbend uphill whenthey cross streams.

18. 23-27 feet/mile19.

20.