Which erosinal force acts alone to produce avalanches and landslides?
916449
probably gravity. it's the most likely. without gravity there would be no wind, running water or sea waves. think about it for a second it'll make sense
1117997
National Geografic website has a lot of information about it. \nIf you go to the linlk provided and then to the section of Natural Forces, you will find a lot of material to support your research. \n\nSecond link is about simulate and understand these events, explaning how it works at all their levels. You can find it to Earthquake, Hurricane, etc. I've putted the link to Vulcanoes\n\nGood luck
157431
They may call it friction but it's a misnomer.  There is skin friction, of course, which dissipates energy as heat, but much of the drag force is caused by imparting kinetic energy to the air mass, i.e., shoving it out of the way.  If you were shoving all the air downward that force would be called lift.  That energy may eventually be dissipated but it is theoretically recoverable. Friction dissipates energy as heat immediately.
268055
Earthquakes allow the tectonic plates to move or slide past one another which changes the landscape.  Earthquakes can create giant voids or massive cliffs depending on the type of plate movement you have.  Earthquakes and plate boundaries also allow the earth to recycle the crust and form new crust.
365546
friction, caused by gravity pushing it down on the ice, and also air resitance which would only be imprant with no friction, and also, to be super technical and dont really say this unless you want to look like a jerk , blackbody radiation which means all matter with energy radiates some of its energy all the time.
893593
The best way to observe this will be from abutments in layers, one layer within the soil zone will be directly on top of and/or cut off layers below.\n\nThe induvidual features each have their own special features.  Debris flows are matrix-supported with large chuncks on top toward the middle of the deposit.  slumps will have extensional features at the top (cracks), and compressional features at the base (folds).  They are also associated with springs along the plane of weakness.  Slides will be normally graded (big on bottom, small on top).\n\nLahars are completely different, and have volcanic origins.
306238
Sand dunes like the ones in Colorado's San luis Valley are formed by winds and wind carrying particles have a scouring effect on the earth like a sand blaster. Wearing away at huge rock formations. Over the extremes of geological time this can make huge differences in the rock. Wind can carry small particles great distances as well and redeposit it. Much top soil is lost in this way. Any wind action such as depostion, erosion  or transportation is refered to as eolian in geological terms.
443615
Friction is hte result of Newton's law which says that to any action there is an opposite and equal reaction. Friction is the result of the interlocking of uneven parts of two substances. So you can understand what would happen if there was no reaction to an action. There would be no football, hockey, swimming, baseball, and all other sports.
127999
On a failr recent space mission an austronaut was goofing around and was swirling different things around in plastic bags - salt, sugar, liquids, ect...\nScientists who observed these experiements noticed that despite a lack of gravity, friction between the granular items caused a static reaction that pulled the grains together.  Some scientists feel that this is why planets are formed.
851419
the gases build up that pushes the molten up, if there is snow causes hazardous and gaseous mud slide down the mountain.  Causes some tremors like earthquakes. Hazardous smoke (ash) cloud.  look up mount saint helens in Washington or the volcanoes in hawaii.  plus there are many throughout south america.  Pictures of mt. st. helens are awesome. I went there after it happened in 1980 it was phenomenal!  I felt the tremors up by bellingham. it was cool.
602845
Any slope that's safe from avalanche.
545618
There's no chemical action. The AgI particles act as nucleation centers around which the moisture aggregates and thus falls as rain. It is more of Surface Chemistry.
585829
It would act like it was on a spring always being pulled toward the middle of the earth and the force acting on it gets smaller as the ball gets closer to the center.  So, like any system where the force is proportional to the negative of displacement (f=-kx), you get harmonic motion.  If you add air resistance, you get damped harmonic motion and the ball eventually ends up at the center of the earth.\n\nOne interesting image from the 'no friction' model is that if you dropped the ball from 4 feet over the hole, it would go exactly 4 feet out the other side and continue like that forever.
86122
I was taught in school that it is due to radioactive decay of elements in the core.  That is pure bullcrap.  If it were true, every time a volcano exploded, there would be radioactive toxins spread out across the world.  Others say gravity pushing on the substances create heat and liquification of earth.  This may be somewhat true.  If you put a piece of solid ice in a chamber and put extreme pressure on it, it turns to liquid.  There must be some other source of internal heat generation though.  I have never found a satisfactory answer to date.  I really don't think anyone knows, just like gravity is still a big mystery.
734596
A force at its most simplistic is a push or a pull. According to Newton's laws of motion, when something is at rest or travelling at constant velocity, there is NO force acting on it. \n\nNewton's second law states that Force = mass x acceleration which means that a force causes a _change_ in velocity (acceleration). So for continuing motion, there is only a force when there is acceleration.
309904
There is a speed at which a falling object can't fall any faster, because the wind resistance holds it back.  It's called "terminal velocity".  It's different for a rock and a wad of paper the same size.  The terminal velocity for a raindrop is pretty low.
710459
There are many ways to reduce the potential for landsliding.  This can involve preventing new landslides or re-activation of pre-existing landslides.  One of the most important steps to take is to understand the structure of the bedrock (assuming we are talking about a bedrock landslide).  Geologic mapping or drilling can reveal the type of bedrock and the orientation of the discontinuities (eg. bedding planes, previous rupture surface).  Mainly those slopes that have bedding tilted the same direction as the sloping hillside surface and that are tilted at an angle less than the hill slope angle are likely to generate unstable conditions.  From that point there are several measures you can take including:\n\nRemoval of material from the upslope portions of the unstable areas (to reduce the mass that would provide a driving force).\n\nPlacement of soil/dirt at the base of the unstable slope to act as a buttress (adding mass to create a resisting force)\n\nReduce the amount of surface water that can percolate through the rock and add weight (i.e. driving force) to the unstable bedrock.  This can be done by constructing concrete drainage ditches to collect and divert the water or by covering the slope with an impermeable barrier (i.e. plastic).  If this is the main condition that is driving landsliding, you can set-up a system of wells drilled into the unstable material and pump the water out.\n\nIn some cases, the unstable bedrock material can be removed with heavy equipment and the slope can be rebuilt with the excavated dirt being replaced as compacted fill.