Write short notes on. Gravity and Solifluction

Gravity: 

1. It is the main force responsible for mass movements.

2. It is a force that acts everywhere on the earth’s surface, pulling everything down. 

3. If the friction on the rock is stronger than gravity for a particular slope, the rock material is likely to stay. 

4. But if the gravity is stronger, movement will occur in the direction of the slope.

Solifluction: 

1. Solifluction is the name for the slow downhill creep of soil, which occurs in a variety of climatic conditions. 

2. It occurs in periglacial or alpine regions. 

3. As permafrost is impermeable to water, soil overlying may become oversaturated and slide slopes down under the pull of gravity.