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D -1000: #1 E -800- C H #3 #4 1200 G N #2 -1000 800 Contour Interval: 40 feet GENERAL RULES FOR READING CONTOUR LINES 1. A contour line connects points of equal elevation. 2. A contour line never branches or splits. 3. Steep slopes are shown by closely spaced contours. 4. Hills are represented by closed contour lines. 5. Closed contours with hachure marks on the downhill side represent a closed depression. 6. When contour lines cross streams or dry stream channels, they form a "V" that points upstream. 7. Contour lines that occur on opposite sides of a valley always occur in pairs. upstream 50 downstream

D -1000: #1 E -800- C H #3 #4 1200 G N #2 -1000 800 Contour Interval: 40 feet GENERAL RULES FOR READING CONTOUR LINES 1. A contour line connects points of equal elevation. 2. A contour line never branches or splits. 3. Steep slopes are shown by closely spaced contours. 4. Hills are represented by closed contour lines. 5. Closed contours with hachure marks on the downhill side represent a closed depression. 6. When contour lines cross streams or dry stream channels, they form a "V" that points upstream. 7. Contour lines that occur on opposite sides of a valley always occur in pairs. upstream 50 downstream

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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When contour lines cross streams or dry stream channels, they form a V that points upstream. Draw arrows next to three of the streams (shown in blue) to indicate the direction in which each is flowing.

 

D -1000: #1 E -800- C H #3 #4 1200 G N #2 -1000 800 Contour Interval: 40 feet GENERAL RULES FOR READING CONTOUR LINES 1. A contour line connects points of equal elevation. 2. A contour line never branches or splits. 3. Steep slopes are shown by closely spaced contours. 4. Hills are represented by closed contour lines. 5. Closed contours with hachure marks on the downhill side represent a closed depression. 6. When contour lines cross streams or dry stream channels, they form a "V" that points upstream. 7. Contour lines that occur on opposite sides of a valley always occur in pairs. upstream 50 downstream
Transcribed Image Text:D -1000: #1 E -800- C H #3 #4 1200 G N #2 -1000 800 Contour Interval: 40 feet GENERAL RULES FOR READING CONTOUR LINES 1. A contour line connects points of equal elevation. 2. A contour line never branches or splits. 3. Steep slopes are shown by closely spaced contours. 4. Hills are represented by closed contour lines. 5. Closed contours with hachure marks on the downhill side represent a closed depression. 6. When contour lines cross streams or dry stream channels, they form a "V" that points upstream. 7. Contour lines that occur on opposite sides of a valley always occur in pairs. upstream 50 downstream
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