What is a depression in topographic terms?

What is a depression in topographic terms?

• A. A rise in elevation
• B. A decline in elevation within a rise in elevation
• C. A flat area
• D. A valley along a river

Answer: (B)

A depression is a local低 area in the landscape—the land is lower there than the surrounding higher ground. It represents a decline in elevation within higher terrain, like a hollow or basin surrounded by ridges or hills. This captures the idea that depressions are low spots embedded in higher surroundings, not rises, not necessarily wide flat areas, and not limited to river valleys.

A depression is a local低 area in the landscape—the land is lower there than the surrounding higher ground. It represents a decline in elevation within higher terrain, like a hollow or basin surrounded by ridges or hills. This captures the idea that depressions are low spots embedded in higher surroundings, not rises, not necessarily wide flat areas, and not limited to river valleys.