Q. Consider the following pairs: / Which of the following pairs matched correctly?
Landforms | Agent |
1. Aretes | River water |
2. Loess | Glacial |
3. Sinkholes | karst |
Explanation:
Pair 1 is incorrectly matched:
An arête is a thin, crest of rock left after two adjacent glaciers have worn a steep ridge into the rock. A horn occurs when glaciers erode three or more arêtes, usually forming a sharp-edged peak. Cirques are concave, circular basins carved by the base of a glacier as it erodes the landscape
Pair 2 is incorrectly matched: Loess can be defined as sediment that has been entrained, transported, and deposited by the wind
Pair 3 is correctly matched: A sinkhole is a hole in the ground that forms when water dissolves surface rock. Often, this surface rock is limestone, which is easily eroded, or worn away, by the movement of water. In a landscape where limestone sits underneath the soil, water from rainfall collects in cracks in the stone.