Mass movement is when material moves down a slope due to the pull of gravity. Soil creep and slumping are 2 types of mass movement.

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Presentation transcript:

Mass movement is when material moves down a slope due to the pull of gravity. Soil creep and slumping are 2 types of mass movement.

Soil Creep Slowest downhill movement of soil. Gravity pulls water in soil down the slope, so soil moves downhill with the water. Slope will appear rippled as a result

Slumping Very common on coast Large area of land moving down a slope – leaves behind a curved surface During dry weather, clay contracts (shrinks) and cracks up. Rain then runs into these cracks and is absorbed by the clay becoming saturated. This weakens rock and gravity pulls it down the slope.

The combination of mass movement and coastal erosion on softer rock cliffs can lead to much quicker rates of coastal erosion, having significant effects on humans and the environment.