47. Which scenario demonstrates deposition?
Answer: C
A pile of debris, including rocks and vegetation, forms at the bottom of a steep hill over time.
This scenario exemplifies deposition as it illustrates the accumulation of materials such as rocks and vegetation that settle in a specific area due to gravitational forces and other natural processes.
A) A rain-induced mudslide removes a significant amount of the vegetation and soil from a hillside.
This option describes erosion rather than deposition. In this scenario, the mudslide actively removes materials from the hillside, leading to a loss of soil and vegetation, which is contrary to the concept of deposition where materials are added to a location.
B) A small river carves a deep canyon in limestone rock over a long period of time.
This scenario depicts the process of erosion as well, where the river's flow cuts into the rock, removing material and shaping the landscape. It does not illustrate deposition, as there is no accumulation of material occurring in this context.
C) A pile of debris, including rocks and vegetation, forms at the bottom of a steep hill over time.
This option clearly demonstrates deposition, as it shows how materials are gradually collected and settled at the base of the hill. The accumulation of debris reflects the natural process of deposition where sediments are laid down in a new location.
D) The roots of a tree on a creek bank are exposed over time due to the flow of rainwater toward the creek.
This choice describes the effects of erosion, where the flow of water undermines the soil and exposes tree roots. This process involves the removal of material rather than the accumulation of it, thus not representing deposition.
Conclusion
The correct answer is option C as it directly illustrates the process of deposition through the accumulation of debris at the base of a hill. In contrast, options A, B, and D primarily focus on erosion, highlighting the removal of materials rather than their deposition. Therefore, option C is the only scenario that correctly demonstrates deposition.