Understanding Map Symbols for Relief

Relief on a map refers to the representation of the physical features of the land's surface, such as mountains, valleys, and slopes. It essentially shows the shape and elevation of the terrain.

Analyzing Line Symbols for Relief

We need to determine which of the given line symbols are used to depict relief:

• (a) Isobars: These are lines connecting points of equal atmospheric pressure. They are used in meteorology to show weather patterns, not land relief.
• (b) Contours: These lines connect points of equal elevation above sea level. They are a primary method for showing topographical relief, indicating height and the shape of the land.
• (c) Hachures: These are short, often perpendicular lines drawn on a map to indicate the steepness and direction of slopes. They are a conventional method used to show relief features visually.
• (d) Isochrones: These lines connect places that are the same travel time away from a starting point. They are used in transport geography and do not depict physical relief.

Identifying Symbols Depicting Relief

From the analysis above:

• Contours (b) directly represent elevation and form.
• Hachures (c) visually represent the steepness and direction of slopes.

Therefore, both contours and hachures are methods used to depict relief on maps.

Conclusion on Relief Depiction

The correct combination of symbols that depict relief is (b) Contours and (c) Hachures.