2007-03-07 00:25:30 · 8 answers · asked by veral s 1 in Science & Mathematics ➔ Physics
THE STRUGGLE WHICH INVOLVES A LARGE PART OF THE SOCIETY
2007-03-07 00:32:50 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Mass Movement
Mass movement is the down slope movement of earth materials under the influence of gravity. The detachment and movement of earth materials occurs if the stress imposed is greater than the strength of the material to hold it in place. Shear strength is a measure if the resistance of earth materials to be moved. The interlocking of soil particles increases the ability of material to stay in place. Plant roots also help bind soil particles together. Shear stress is primarily a function of the force exerted by the weight of the material under the influence of gravity acting in the down slope direction. The slope of the surface determines the amount of stress that occurs on earth materials. Water destabilizes hill slopes by creating pressure in the pore spaces of earth materials. Water infiltrating into slope materials saturates the soil particles at depth by filling the pore spaces between. The weight of water lying above creates water pressure that drives soil particles apart. This lessens the friction between them and enables them to slip past one another. Material is mobilized when the shear stress imposed on a surface exceeds the shear strength. The movement, especially in the case of slides and slumps, is along a failure plane. The failure plane may be a well-defined layer of clay or rock upon which sets the destabilized surface material. Humans induce mass movement when subjecting a slope to a load that exceeds its ability to resist movement. People building houses on scenic hill slopes often find their homes threatened by a landslide. Undercutting of hillsides during road construction commonly creates unstable slopes making them prone to failure.
Example: Rock falling, Sliding, Soil creeping etc.
2007-03-09 17:34:06 · answer #2 · answered by Rajkiya 2 · 1⤊ 0⤋
in jist,
Mass movement is the movement of surface material caused by gravity. Landslides and rockfalls are examples of very
2007-03-07 04:06:49 · answer #3 · answered by veerabhadrasarma m 7 · 0⤊ 0⤋
movement of centre of mass in a system due to force frome outside of system
2007-03-07 00:29:07 · answer #4 · answered by yogesh gulhania 2 · 0⤊ 0⤋
When Al Sharpton is realy on his game
2007-03-07 00:40:22 · answer #5 · answered by .G. 7 · 0⤊ 0⤋
http://www.fiu.edu/~longoria/natural/mass/mmain.htm
2007-03-07 00:40:25 · answer #6 · answered by Anonymous · 0⤊ 0⤋
um can u explain a bit lady.
2007-03-08 05:15:24 · answer #7 · answered by shivam j 2 · 0⤊ 0⤋
right here
http://911scholars.org/
2007-03-07 00:33:09 · answer #8 · answered by bosgrove 1 · 0⤊ 0⤋