Abrasion is mechanical scraping of a rock surface by friction between rocks and moving particles during their transport in wind, glacier, waves, gravity or running water. A glacier is a large, long-lasting river of ice that is formed on land and moves in response to gravity and undergoes internal deformation. ... The rocky side of a mountain creek near OrosÃ, Costa Rica. ... Briksdalsbreen is one of the more popular parts of Jostedalsbreen Jostedalsbreen or Jostedal Glacier, is the biggest glacier in continental Europe. ... Friction is the force that opposes the relative motion or tendency of such motion of two surfaces in contact. ... Wind is the rough horizontal movement of air (as opposed to an air current) caused by uneven heating of the Earths surface. ... A glacier is a large, long-lasting river of ice that is formed on land and moves in response to gravity and undergoes internal deformation. ... A wave is a disturbance that propagates through space or spacetime, often transferring energy. ... Gravity is a force of attraction that acts between bodies that have mass. ... Water is a chemical substance that is essential to all known forms of life. ...
The intensity of abrasion depends on the hardness, concentration, velocity and mass of moving particles. In materials science, hardness is the characteristic of a solid material expressing its resistance to permanent deformation. ... In chemistry, concentration is the measure of how much of a given substance there is mixed with another substance. ... The velocity of an object is simply its speed in a particular direction. ... Unsolved problems in physics: What causes anything to have mass? Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to. ...
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