Small or medium scale map-showing the nature relief by semi-pictorial symbols is called what?

• A. Isopleths
• B. Contours
• C. Hypsometry
• D. Relief shading

Answer: (A)

Isopleths are lines that connect points with the same value, a handy way to map how relief changes across an area. On small or medium-scale maps that show terrain with semi-pictorial symbols, these lines provide a clear framework for depicting elevation patterns without crowding the map with too many details. The symbols can then be placed in relation to the isopleth lines to convey hills and ridges in a readable, consistent way. Contours are a specific type of isopleth that map elevation directly, hypsometry adds color bands to show height ranges, and relief shading uses tonal shading to imply terrain—none of these use the equal-value lines as the primary organizing device in the same way as isopleths.