GED Social Studies TestGeography and the WorldEasy
A geographer is analyzing a region characterized by extensive, flat, fertile plains formed by sediment deposition from rivers and often found at low elevations. What type of landform is the geographer most likely studying?
- AMountain Range
- BMesa
- CAlluvial Plain
- DVolcanic Plateau
Show answer & explanationAnswer & explanation
Correct answer: C. Alluvial Plain
Alluvial plains are flat, fertile landforms created by the deposition of sediment by rivers, making them ideal for agriculture and human settlement. The other options describe different types of landforms.
Why the other options are wrong
- A. A mountain range is a series of mountains or hills ranged in a line and connected by high ground.
- B. A mesa is an isolated flat-topped hill or mountain with steep sides, common in arid regions.
- D. A volcanic plateau is a plateau produced by volcanic activity, often characterized by layers of solidified lava.
Alluvial Plain
An alluvial plain is a flat area of land formed by the deposition of sediment by a river or stream over a long period.
- Formed by sediment (alluvium) deposited by flowing water.
- Typically found in river valleys or at the base of mountains.
- Often very fertile and suitable for agriculture.
Memory trick: Rivers deposit dirt, making plains fertile and wide.