Identify the correct statements about techniques used in mapping the Terra.
A. Calligraphic curve illustrates the average gradient between successive contours and shows up prominently any abrupt change in the general relief depicted on a map.
B. The relation between horizontal and vertical scales is known as horizontal exaggeration.
C. A profile drawn along the stretch of road, or a river, is called longitudinal profile.
D. A cross profile gives a panoramic view with a distant sky-line, a middle ground and a foreground.
Choose the correct answer from the options given below:

Correct option is C

Calligraphic curve illustrates the average gradient between successive contours and shows up prominently any abrupt change in the general relief depicted on a map: Correct. A calligraphic curve can be used in some mapping techniques to highlight the gradient and changes in relief, although contour lines are more commonly used.
A profile drawn along the stretch of road, or a river, is called longitudinal profile: Correct. A longitudinal profile refers to an elevation profile taken along the length of a linear feature, like a road or river.
Information Booster:
· Contour Lines: These lines on a map represent points of equal elevation. The closer the contour lines, the steeper the terrain, while widely spaced lines represent gentle slopes. They are commonly used in topographical maps to depict the 3D features of the terrain in a 2D space.
· Longitudinal Profile: This profile is essential for studying rivers, roads, and valleys. It helps in understanding the gradient and potential flow of water in hydrology or slope stability in infrastructure development. It is used in environmental and engineering projects to assess drainage, erosion potential, and construction challenges.
Additional Knowledge:
The relation between horizontal and vertical scales is known as horizontal exaggeration: Incorrect. Horizontal exaggeration is the ratio between the vertical and horizontal scales on a profile. However, it is not used to define the relation between the two scales as implied in the statement.
A cross profile gives a panoramic view with a distant sky-line, a middle ground, and a foreground: Incorrect. A cross profile represents a perpendicular or cross-sectional view of a landscape or feature. It is not a panoramic view but rather a side view of landform features like valleys, hills, or riverbeds, typically showing elevation changes across the feature.