Question

An earthflow is most conspicuous in ________ where a bulging lobe of material pushes out onto a

valley floor.
A) its center
B) landslide zones
C) its lower reaches
D) its upper reaches
E) rock glacier zones

Answer 1

An earthflow is most noticeable in its lower reaches where a bulging lobe of material advances onto a valley floor. These areas show significant landscape changes due to sediment and earth movement, often after heavy rainfall, rapid snowmelt, or a landslide.

Step-by-step explanation:

An earthflow is most conspicuous in its lower reaches where a bulging lobe of material pushes out onto a valley floor. In these lower reaches, the movement of sediment and earth tends to be more pronounced, especially after being acted upon by factors such as heavy rainfall, rapid snowmelt, or additional earth movement from activities like a landslide. These earthflows may result in significant alterations to the landscape, creating observable changes over time, such as those seen in areas affected by landslides or other geological events.