371. The term “contour interval” refers to:
a) The spacing between contour lines
b) The difference in elevation between contour lines
c) The curvature of contour lines
d) The intersection of contour lines
View Answer
Correct answer: b) The difference in elevation between contour lines
Explanation: The contour interval specifies the vertical distance between adjacent contour lines and represents the change in elevation.
372. The process of creating contour lines on a topographic map is known as:
a) Profiling
b) Gridding
c) Taping
d) Contouring
View Answer
Correct answer: d) Contouring
Explanation: Contouring involves the process of determining and drawing contour lines to represent the shape of the terrain.
373. Which of the following statements is true about contour lines that are very close or touching?
a) They indicate a steep slope or cliff
b) They represent a flat area or plateau
c) They indicate a valley or depression
d) They represent a river or stream
View Answer
Correct answer: a) They indicate a steep slope or cliff
Explanation: When contour lines are very close or touching, it suggests a steep slope or cliff where the elevation changes rapidly.
374. What is the purpose of contour lines in surveying and mapping?
a) To represent land ownership boundaries
b) To indicate the presence of geological faults
c) To show changes in vegetation types
d) To depict changes in elevation and terrain features
View Answer
Correct answer: d) To depict changes in elevation and terrain features
Explanation: Contour lines are used to represent changes in elevation on a map and provide information about the shape and features of the land.
375. When contour lines are spaced evenly apart, it indicates:
a) Uniform slope
b) Variable slope
c) Flat terrain
d) Depressions
View Answer
Correct answer: a) Uniform slope
Explanation: Evenly spaced contour lines suggest a uniform slope or consistent rate of elevation change across the area.
376. The vertical interval between contour lines is determined by:
a) The map scale
b) The size of the map sheet
c) The topography of the area
d) The contouring method used
View Answer
Correct answer: c) The topography of the area
Explanation: The vertical interval between contour lines is determined based on the topography of the area and the desired level of detail.
377. Which of the following contour line patterns indicates a hill or mountain peak?
a) Straight, parallel contour lines
b) Concentric circles
c) V-shaped lines
d) Horizontal lines
View Answer
Correct answer: b) Concentric circles
Explanation: Concentric circles represent a hill or mountain peak, with higher elevations toward the center and decreasing elevations outward.
378. The spacing between contour lines depends on:
a) The contour interval
b) The size of the map
c) The scale of the map
d) The precision of the survey
View Answer
Correct answer: a) The contour interval
Explanation: The spacing between contour lines is determined by the contour interval, which specifies the vertical distance between adjacent lines.
379. Contour lines that cross each other indicate:
a) A fault line
b) An erosion feature
c) An intersection of two slopes
d) A water body
View Answer
Correct answer: a) A fault line
Explanation: When contour lines cross each other, it suggests the presence of a fault line, where the ground has undergone displacement.
380. In contouring, supplementary contour lines are used to:
a) Indicate areas of dense vegetation
b) Represent water bodies and streams
c) Show areas of gradual slope change
d) Provide more detailed elevation information
View Answer
Correct answer: d) Provide more detailed elevation information
Explanation: Supplementary contour lines are added between main contour lines to provide additional detail and a better representation of elevation changes.
