Gravity.
gravity
Examples of erosion include the wearing away of beaches by waves, the carving of canyons by rivers, and the gradual breaking down of rock formations by wind and rain.
When erosion occurs, mountains can lose their original shape and size as sediment is carried away by wind, water, or ice. Over time, erosion can lead to the gradual wearing down of mountains and even the formation of valleys between them.
Gravity is the main agent of erosion that causes a rock slide. Over time, gravity slowly pulls loose rocks and soil downhill, eventually leading to a sudden and rapid movement of rock material during a rock slide.
Some of the types of mass movement and triggers : Flows : Volcanic Eruption -- Lahars from volcanic ash and debris in rivers Heavy Rains -- Loose soil slides down a rock slope Liquefaction -- earthquake shakes fine layer of underground silt, ground slides away Landslides : Undercutting -- erosion by streams or ground water Loose Rocks -- earthquake starts dirt and boulders rolling down a hill Creep : Subsiding -- Soil held by plants slowly inches its way down a steep slope Slump : Ocean erosion -- Undercut sea cliffs can shear off as a block and slide downward
hmm youu are not serious for asking that kind of stupid question
gravity
Water is the erosive agent responsible for mudslides and boulders rolling down hills. The force of water can dislodge soil and rocks on steep slopes, causing them to slide or roll downhill rapidly. Factors such as heavy rainfall, steep terrain, and loose soil can contribute to these erosion processes.
Erosion
rolling(rotational mechanics)
erosion
A rolling presentation is a slide show that once started does not need the slides changed manually they change on a timer to fit what the presenter is saying.
an accumulation of boulders, stones, or other debris carried and deposited by a glacier.
Examples of erosion include the wearing away of beaches by waves, the carving of canyons by rivers, and the gradual breaking down of rock formations by wind and rain.
A penguin rolling down the hill or a penguin in a revolving door xxx
When an object rolls over a surface, the friction that occurs is called rolling friction. Rolling friction is lower than sliding friction, which occurs when an object slides along a surface. Rolling friction results from the deformation of the object and the surface it is rolling on.
When erosion occurs, mountains can lose their original shape and size as sediment is carried away by wind, water, or ice. Over time, erosion can lead to the gradual wearing down of mountains and even the formation of valleys between them.