Explain three factors that cause soil creep.
Answer:
-Temperature change causes soil particles to expand and contract hence they shift their position downslope
-Moisture or rain water causes soils to become wet and compact. On drying, the
particles loosen and may shift from the original position down slope
-Human activities and action of burrowing animals may cause the removal of soil on the lower part of the slope. This has a trigger effect on soil particles on the upper part of a slope which may then shift downslope.
-Freezing of soil water expands the spaces between soil particles. Once
the water thaws, the particles fall by gravity and may shift position downslope.
- Moisture acts as lubricant to soil particles causing their
movement downslope
-External forces such as moving vehicles and earth tremors have a trigger effect
which causes downward movement of the soil particles.
-Moisture or rain water causes soils to become wet and compact. On drying, the
particles loosen and may shift from the original position down slope
-Human activities and action of burrowing animals may cause the removal of soil on the lower part of the slope. This has a trigger effect on soil particles on the upper part of a slope which may then shift downslope.
-Freezing of soil water expands the spaces between soil particles. Once
the water thaws, the particles fall by gravity and may shift position downslope.
- Moisture acts as lubricant to soil particles causing their
movement downslope
-External forces such as moving vehicles and earth tremors have a trigger effect
which causes downward movement of the soil particles.
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