351. The process of connecting points of equal elevation on adjacent contour lines is called:
a) Spotting
b) Interpolation
c) Contouring
d) Stadia surveying
View Answer
Correct answer: c) Contouring
Explanation: Contouring involves connecting points of equal elevation on adjacent contour lines to create a continuous representation of the ground surface.
352. Which of the following methods is commonly used for contouring large areas?
a) Grid method
b) Triangulation method
c) Traversing method
d) Tacheometric method
View Answer
Correct answer: b) Triangulation method
Explanation: The triangulation method is commonly used for contouring large areas, where the ground is divided into triangles and elevation values are determined at the vertices.
353. A topographic map typically displays:
a) Only contour lines
b) Contour lines and spot elevations
c) Contour lines and grid lines
d) Contour lines and slope arrows
View Answer
Correct answer: b) Contour lines and spot elevations
Explanation: A topographic map typically displays contour lines and spot elevations to provide detailed elevation information.
354. Which of the following statements about contour lines is true?
a) Contour lines are always straight
b) Contour lines represent the true shape of the Earth’s surface
c) Contour lines never intersect each other
d) Contour lines are always evenly spaced
View Answer
Correct answer: b) Contour lines represent the true shape of the Earth’s surface
Explanation: Contour lines represent the true shape of the Earth’s surface by connecting points of equal elevation.
355. A contour line that forms a closed loop with no other contour lines inside it represents a:
a) Ridge
b) Valley
c) Depression
d) Hilltop
View Answer
Correct answer: c) Depression
Explanation: A closed contour line with no other contour lines inside it represents a depression or a closed basin.
356. Which of the following statements about contour maps is false?
a) Contour maps help in analyzing the slope of the terrain
b) Contour maps assist in identifying drainage patterns
c) Contour maps are only used for aerial surveys
d) Contour maps aid in locating features like hills and valleys
View Answer
Correct answer: c) Contour maps are only used for aerial surveys
Explanation: Contour maps are used for both aerial and ground surveys to depict the elevation and shape of the terrain.
357. Which of the following is an advantage of digital contouring techniques?
a) Ability to directly measure the slope of the terrain
b) More accurate representation of the terrain
c) Ease of manual data interpolation
d) Compatibility with all surveying instruments
View Answer
Correct answer: b) More accurate representation of the terrain
Explanation: Digital contouring techniques, such as using GIS software, allow for more accurate representation of the terrain compared to manual methods.
358. The process of determining the elevation of intermediate points between two known elevation points is called:
a) Spotting
b) Contouring
c) Interpolation
d) Levelling
View Answer
Correct answer: c) Interpolation
Explanation: Interpolation involves determining the elevation of intermediate points between two known elevation points by estimating values based on the surrounding contour lines.
359. Which of the following methods is commonly used for contouring irregularly shaped areas?
a) Grid method
b) Radial method
c) Square method
d) Triangulation method
View Answer
Correct answer: b) Radial method
Explanation: The radial method is commonly used for contouring irregularly shaped areas, where concentric circles are drawn around a central point, and elevation values are determined along the radial lines.
360. The contour interval on a map indicates:
a) The horizontal distance between contour lines
b) The vertical distance between contour lines
c) The average elevation of the area
d) The slope of the terrain
View Answer
Correct answer: b) The vertical distance between contour lines
Explanation: The contour interval represents the vertical distance between adjacent contour lines on a map, providing information about the variation in elevation.
