Exogenic Processes Flashcards
Define gradation
Process of removing unevennes and making it a level land
When Is a surface called graded
A surface is called graded when the erosion and the deposition by different agents of change are almost equal
What is degradation?
Degradation is the general wearing away of the land surface by external forces
Also known as denudation
Define weathering
It is the process of weakening, breaking up, rotting and the disintegration of rocks at the earth’s surface
What is erosion?
Process of scraping, scratching and grinding of the surface Rock.
It includes removal or transportation of the weathered rock material from one place to another
What are the differences between gradation and weathering
1] definition- gradation is the process of removing unnevennes on the land and making it a level land whereas weathering is breaking up, wearing, rotting and disintegration of rocks at the earth surface .
2] The main agencies of gradation are moving water, wind glaciers and sea waves whereas the main agencies of weathering are temperature changes, Humidity and precipitation
3] degradation is a static process as it involves no transportation or depositional processes whereas weathering is a continuous process which involved erosion
4] gradation plays an important role is soil formation whereas weathering is responsible for the the development of many landforms
What are the three types of weathering?
Physical
Mechanical biological