FORCES THAT AFFECT THE EARTH

MASS WASTING OR MOVEMENT
What is Mass wasting?
Refer to the movement of debris or loose material from weathering or bedrock down a slope.

FACTORS INFLUENCE MASS WASTING

1. Steepness of the slope
If the area or land is steeper the movement will be faster than the gentle slope
2. Weight of material
Light material lead to the faster movement than heavy material.
3. Amount of water in the material.
When there are alot of water movement will be slow than many water movement will be great.

TYPES OF MASS WASTING MOVEMENT

1. Soil creep
Is steady downward movement of soil on all sloping land
*Rain water lubricates soil particles and enable than to slide over each other. Is the slow movement but it can cause tree,fance and electrical polls are tilted down the hill

2.Mud flow
Is the movement of clay containing an excessive amount of water behave as a plastic mass moving as a thicky viscous fluid

3. Land slide
It take place when large quantities of loosen rock and soil sudden slide together down the steeper slope.

4. Rock fall
Is the falling of mass of rock from a steep cliff this is most rapid of all eg.Mwanza

EFFECT OF MASS WASTING MOVEMENT

1. Formation of fertility soil
2.Tourist attraction
3.Land degradation eg.soil erosion
4.Damage of property
5.Loss of life
6.Creation of rocks

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