2Agents of ErosionFour forces can move sediments from one place to another. They are called the agents of erosion. They are wind, running water, glaciers and gravity.
3Energy of MotionWater, ice and gravity will have more of an effect on steep slopes because the material generates more speed and creates more force. Wind will create more force when the velocity increases too.
4DepositionDeposition is the dropping of sediments due to the reduction in the energy of motion. The slope of a hill may be reduced or the wind blocked by an obstacle.
5Mass movementsMass movements are methods by which gravity pulls materials down hill. They include slump, creep, rockslides and mudflows.
6SlumpSlump forms when a slope is undercut and the earth material slides downward as a large block. It make a C shaped scar on the side hill.
7Slump 2Slump may occur in slopes that are cut too vertical.
8Slump 3Slump occurs on the outside bend of a river when the river erodes the soil beneath the surface.
10CreepCreep is the slow down hill movement of soil. It can cause roads, railroads and other things to bend downhill
11RockslideRockslides can cause tremendous damage to roads and homes. They can be caused by cutting a slope too vertical or may triggered by earthquakes.
12Rockslides 2Use a little common sense when building in mountainous regions.
13MudflowsMudflows result when the ground becomes saturated with water and flows down slope. They may occur in desert regions during a downpour, during a volcanic eruption or during prolonged rainfall.