If original surface forms a significant slope, as is commonly case in hilly and mountainous regions, frost fragments get heaved up from crevices and cavities and n roll down slope under influence of gravity. Finally, fragments accumulate at base as heaps commonly called as Scree deposits.

Oxidation means of eir removal of electron or hydrogen or addition of oxygen but, reduction may involve removal of oxygen or addition of hydrogen or electron.

Wearing is defined as, a natural process of in-situ mechanical disintegration and or chemical decomposition of rocks of crust of Earth by certain physical and chemical agencies of atmosphere. It is a very slow process.

Disfiguring, pitting, honeycombing and loss of surface appearance are quite common effects chemical wearing on stones used irrationally without due regard to local environment. Scree formation happens due to mechanical wearing.

Studies have shown that in desert like Kara Qum, rocks are exposed to as high temperatures as 70-80° C in summer and are n cooled down to -10° C in winter. Such repeated variations in temperature experienced by a body of rock gradually break it into smaller pieces.

Wearing is affected by factors like nature of rock, climate, physical environment but is not affected by colour of rock. It has no influence over its wearing.

Exudation is a process similar to frost action but in this case disintegration takes place due to formation of sodium chloride etc., within cavities of rocks reby causing disintegration. This process is seen in good measure in porous rocks near seashore.

The type of erosion involving rubbing, grinding, abrading and polishing rock surfaces by any natural agent (wind, water or ice) with help of its lead while passing over rocks is termed as abrasion.

The basic definition of Eluvium is ?It is end product of wearing that happens to lie over and above parent rock?. Regolith is anor term for eluvium.

The heavier and coarse sediments such as sand grains, pebbles and gravels etc. are lifted up periodically during high velocity times and only for short distances and that too for smaller heights above ground. The uplifting of lighter particles is called suspension.