Here's why:
* Gravity: It's the force that pulls everything towards the center of the Earth. In these cases, gravity acts on loose material (soil, rock, etc.) causing it to move downhill.
* Erosion: The process of moving weathered material from one place to another. Gravity causes the material to slide, fall, or creep downhill, thus eroding the original location.
* Deposition: The process of dropping or depositing the eroded material in a new location. As the material moves downhill, it eventually comes to rest, depositing in a lower area.
Let's break down the examples:
* Landslides: Large-scale movements of soil and rock down a slope. Gravity is the primary force causing the mass of material to move.
* Rockfalls: Rocks falling from a cliff face. Gravity pulls the rocks downward.
* Creep: Slow, gradual downhill movement of soil and rock. Gravity is the force that pulls the material down, but it acts over a long period.
Let me know if you have any other questions!
