Changing the Earth's Surface Answers

Landslides and slumps both involve the movement of soil and rock downhill. However, in landslides the rock and soil are loose, while in slumps the rock and soil moves as a single mass.

A mudflow can occur when soil that is usually dry become soaked with water. If the soil is especially high in clay content, mudflows con occur on very gentle slopes. Earthquakes can also trigger mudflows.

Slumps occurs when a large piece of a steep hill breaks away and falls.

The five agents of erosion are wind, gravity, waves, running water, and glaciers.

When new mountain ranges are formed, the cycle of weathering, erosion, and deposition begins. Weathering begins to breakdown the rocks that make of the mountain range. Erosion acts to wear down the mountains. The sediments that erosion has displaced from the mountain will be deposited in the valleys. Over time, the landscape will appear to be almost level.

Both are sudden mass movements caused by gravity. In a landslide, rock and soil slide down a steep slope. An earthquake can sometimes trigger a landslide. In a mudflow, soil with a high water content suddenly turns to liquid mud and flows down a slope. Mudflows can occur even on relatively gentle slopes. Heavy rain can trigger a mudflow. Mudflows are especially likely in areas with clay soils.

This is probably an example of creep.