Why does the rate of dripping water govern whether stalactites or stalagmites are formed?
399908
No, it's purely dependent on the concentration of dissolved material in the water (usually limestone/calcium carbonate). The more dissolved limestone, the more rapid growth of stagtites/stalagmites.
84859
There are three ways actually:\n1. Rainwater soaks into the ground. Almost all soil will allow water to soak in and as it goes downward it encounters rock which also has small holes called pores that water can soak into. This is how water gets into wells that we drink from or use for irrigation. \n\nThe other two types do not always fit the definition of 'groundwater' but are found beneath the earth's surface:\n\n2. When rocks like sandstone are formed, they are mostly formed (deposited) beneath the ocean or under a river delta. They are filled with water when they form and this water is often trapped there by sediments like clay that deposit over the water filled sandstone. This water is often saltwater. \n\n3. When some rocks deep in the earth undergo a process called metamorphism they chemically expel water. Many rocks have water bound up as part of their chemical content and when this rock changes from pressure or heat the water is released. Some types of clay will also release water that is bound up chemically in the clay when they are buried and under higher temperature and pressure.
624441
That answer is true.\n\nThe water table rises & falls in response to rainfall amounts.\n\nWhen there is little rain, the water table will lower thereby affecting the wells in surrounding areas.\n\nOn the flip side, when there are great amounts of rain, the water table will rise. Sometimes the rain is so great that the water table reaches the surface & the ground is saturated.
895836
its formed by the dissolution of a soluble layer or layers of bedrock, usually carbonate rock such as limestone or dolomite ..\n\nKarst landforms are generally the result of mildly acidic water acting on soluble bedrock such as limestone or dolostone. The carbonic acid that causes these features is formed as rain passes through the atmosphere picking up CO2, which dissolves in the water. Once the rain reaches the ground, it may pass through soil that may provide further CO2 to form a weak carbonic acid solution: H2O + CO2 → H2CO3. Recent studies of sulphates in karst waters suggests sulphuric and hydrosulphuric acid may also play an important role in karst formation.\n\nThis mildly acidic water begins to dissolve the surface and any fractures or bedding planes in the limestone bedrock. Over time these fractures enlarge as the bedrock continues to dissolve. Openings in the rock increase in size, and an underground drainage system begins to develop, allowing more water to pass through and accelerating the formation of underground karst features.\n\nfor more try http://en.wikipedia.org/wiki/Karst
2208
Sleet is formed by snow (single ice crystals) being formed in cold clouds and then falling through warmer air so that they begin to partially melt, falling as wet snow - sleet.\n\nHailstones form by water droplets freezing very quickly in a cloud so that they form a small blob or nucleus rather than the larger crystal formed by a slow freezing snow flake crystal. The nucleus continues to fall through the cloud until it meets a strong upcurrent of warmer damper air coming up from the ground.  This blows the ice droplet up into the colder part of the cloud.  the warm air surrounding the nucleus cools and the water in it condenses out and freezes onto the surface of the existing ice droplet making it larger and heavier.  This is cycle isrepeated until the updraught is not strong enough to keep the hailstone airborne and it (and the millions of others with it) drop to the ground.\n\nThe stronger the updraught the larger the final hailstone.\n\nIf you collect some hailstones after they have dropped and use a sharp knife to cleanly cut one in half, you might be able to see the individuals layers of ice within the hailstone through a magnifying glass or microscope.\n\nHailstones can become very very big - have alook at the guiness book of records - but I believe that you Americans hold the record for a hailstone that fell in Kansas, USA, and was measured at 43.18cm (17 in) long - unfortunately no idea of the weight.
420369
CONDENSATION, it's the same way we get rain!  water evaporates from heat, it turns into vapor(clouds) and when they get enough water, it rains!
1151592
Great question!  If you are truly looking for a scientific answer, remember that science must be observable.  During our lifetime, a similar (yet much smaller) catastrophe occurred which provided scientific evidence of how the Grand Canyon was actually formed . . . Mount St. Helens.\n\nAt Mount St. Helens eruption, the entire mountain was rearranged beyond recognition within 9 hours.  Deep canyons were formed within five months.  Layered rock strata formed in three hours.  A river system formed in nine hours.  Sinking logs looked like aged forests within just ten years.  Also, a new model for understanding coal formation was adopted . . . all because of what could be observed at Mount St. Helens eruption.\n\nConsequently, much has been explained about how the Grand Canyon was formed; we no longer have to guess.  The Grand Canyon is a lasting monument of the worldwide flood during the life of Noah in approximately 2458 BC.  Up until the time of Mount St. Helens, geologists never imagined such changes could occur in such a short amount of time.  If you see what occurred at Mount St. Helens in our lifetime (in just a few hours and months), you can easily understand how the Grand Canyon was formed during a worldwide flood with erupting volcanoes, massive landslides and receding waters at rapid speed.  That’s science!\n\n'The catastrophic erosion of Grand Canyon (probably a result of drainage of lakes) was associated with river-terrace gravels, lake sediments, landslide deposits, and lava flows of the post-Flood period,” says Steven A. Austin. (Reference #3)\n\nCheck out the 'Answers in Genesis' website for lots of great information.  Best wishes on your search for truth and quest for knowledge . . . !  May you continue to search as if looking for a hidden treasure . . . !
140056
((((((Edited)))))\n\nThe short answer is friction. If the drops were in a vacuum they would fall that the same rate no matter the size. The drag of the friction in the air slows down the falling drop.\nIts called fluid friction and is affected by viscosity of the air and the weight of the droplet overcoming the drag.\n\nhttp://www.answers.com/Fluid+Friction?gwp=12&method=2\n\nI dont know how helpful that was but do some searches on fluid friction and you may find what you are looking for\n\nGood Luck!
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B. Capillarity\n\n"Capillarity causes the part of the surface of a liquid in contact with a solid, to be either elevated above (e.g. water), or depressed below (e.g. mercury), the rest of the surface. This trait is named for the behaviour of liquids in capillary tubes placed perpendicular to the surface. The forces operating within capillarity are cohesion, adhesion, and surface tension.\n\nCapillary action helps us in our daily lives. For example, it makes water rise through the fibres of a kitchen towel. If capillary action did not exist, we would not be able to blot up spills on a table, or ink from a page."\n\n"Expert: Spaceman\nDate: 3/9/2006\nSubject: mechanics\n\nQuestion\nDear Spaceman, \n\nI have a son who is in high school who needs some help in mechanics,and I'm really not good in this area. Please help! \n\n1. In which of the following units is acceleration expressed? \n\nA. Newtons \nB. Foot-pounds \nC. Kilograms \nD. Meters per second squared \n\n\n2. A stone falls from a ledge and takes 8 seconds to hit the ground. The stone has an original velocity of 0 m/s. How tall is the ledge? \n\nA. 1,254.4 meters \nB. 313.6 meters \nC. 78.4 meters \nD. 39.2 meters \n\n\n3. A tank with a flat bottom is filled with water to a height of 4 meters. What is the pressure at any point at the bottom of the tank? (You can ignore atmospheric pressure when calculating your answer.) \n\nA. 4.0 kPa \nB. 9.8 kPa \nC. 18.9 kPa \nD. 39.2 kPa \n\n\n4. The ability of a material to transfer heat or electric current is called \n\nA. insulation. \nB. porosity. \nC. conductivity. \nD. convection. \n\n\n5. A steel block has a volume of 0.08 m³ and a density of 7,840 kg/m³. What is the force of gravity acting on the block (the weight) in water? \n\nA. 5,362.56 N \nB. 6,150.64 N \nC. 6,700.56 N \nD. 7,600.18 N \n\n\n6. When an automotive battery is fully charged, the sulfuric acid and water mixture will have a specific gravity of about \n\nA. 0.15. \nB. 1.0. \nC. 1.3. \nD. 2.5. \n\n\n7. If an object has a mass of 20 kg, what is the force of gravity acting on it on earth? \n\nA. 196 N \nB. 2.04 kg \nC. 32.67 N \nD. 1.96 kg \n\n\n8. If a small-diameter open glass tube is partially immersed in a vessel containing mercury, the surface of the mercury inside the tube will be \nA. lower than the mercury in the vessel, and shaped like the outside of an umbrella. \nB. higher than the mercury in the vessel, and shaped like the outside of an umbrella. \nC. lower than the mercury in the vessel, and shaped like the inside of a bowl. \nD. higher than the mercury in the vessel, and shaped like the inside of a bowl. \n\n\n9. How much time should be allowed for a 605-mile car trip if the car will be traveling at an average speed of 55 miles per hour? \n\nA. 8.75 hours \nB. 9 hours \nC. 10.5 hours \nD. 11 hours \n\n\n10. A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine? \n\nA. 92 percent \nB. 94 percent \nC. 96 percent \nD. 97 percent \n\n\n11. What is the kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s? \n\nA. 2,940 J \nB. 5,880 J \nC. 6,000 J \nD. 12,000 J \n\n\n12. If a gas has a gage pressure of 156 kPa, its absolute pressure is approximately \n\nA. 56 kPa. \nB. 100 kPa \nC. 256 kPa. \nD. 300 kPa. \n\n13. According to Ptolemy's model of the movement of celestial bodies, \n\nA. the earth rotates around the sun. \nB. the sun is the center of the universe. \nC. the earth rotates around the moon. \nD. planets orbit in circular paths around the earth. \n\n\n14. A car with a mass of 1,200 kilograms is moving around a circular curve at a uniform velocity of 20 meters per second. The centripetal force on the car is 6,000 newtons. What is the radius of the curve? \n\nA. 160 meters \nB. 80 meters \nC. 32 meters \nD. 16 meters \n\n\n15. What force is required to accelerate a body with a mass of 15 kilograms at a rate of
605564
Water doesn't slow down gravity. Gravity always pulls things down at roughly 9.8 m/s^2 (at most places on Earth, anyway). What happened, though, is that the water slowed down the desent of the coins. Remember, water is a molecule. When gravity pulled the coins down through the water the water molecules pushed back up against the coins. Its Newton's law, "for every action there is an equal and opposite reaction." Air actually works the same way. Its called terminal velocity. If you jumped out of a plane you can only fall so fast before the force of the air molecules acting against gravity equals the downward force of gravity, thereby keeping you from accelerating downward to a faster speed.\n\nNow, as for why one hit sooner then the other, that's because of how they fell. If the coin fell flatwise on the water it falls slower because there is more surface area of the coin in the way of the water. If the coin falls on its edge there is less surface area of the coin to meet the opposing force of the water and, therefore, less resistance (although the coin will flop around and turn from the force more readily). Actually, predicting a coin's free movement through a liquid is quite difficult and involves a lot of fluid dynamics and center of mass stuff.\n\nFor short distances, though, you can generally fake a rough estimate by simplifying math. You know those things with a fishbowl and a shotglass that most places like Perkin's have? Where if you drop a quarter into the glass you get a free cookie or something? Most people drop the coin edgewise and then wonder why the coin misses. The best way to do it is drop the coin in flat over the glass because the force acting against the coin is more balanced and less prone to exerting a torque the the coin as it falls. Try it sometime and see for yourself.
380819
when clouds melts then it rains,its the water cycle...water evaporates due to heat n goes up n along with dust particles  it forms what we called clouds n these clouds keep floating n when temperature rises n clouds reach certain atm. pressure due to it melting,,raining occurs
1125378
One thing you notice right away about snow crystals is that they form some elaborate and complex shapes -- often displaying lacy, branching structures.  Where does this complexity come from?  After all, snow crystals are nothing more than ice which has condensed from water vapor.  How does the simple act of water vapor freezing into ice produce such intricate designs? \n   The answers to these questions lie in just how water molecules travel through the air to condense onto a growing snow crystal.   The water molecules have to diffuse through the air to reach the crystal, and this diffusion slows their growth.  The farther water molecules have to diffuse through the air, the longer it takes them to reach the growing crystal.\n   So consider a flat ice surface that is growing in the air.  If a small bump happens to appear on the surface, then the bump sticks out a bit farther than the rest of the crystal.  This means water molecules from afar can reach the bump a bit quicker than they can reach the rest of the crystal, because they don't have to diffuse quite as far.\n   With more water molecules reaching the bump, the bump grows faster.  In a short time, the bump sticks out even farther than it did before, and so it grows even faster.  We call this a branching instability -- small bumps develop into large branches, and bumps on the branches become sidebranches.  Complexity is born.   This instability is a major player in producing the complex shapes of snow crystals. \n   When the branching instability applies itself over and over again to a growing snow crystal, the result is called an ice dendrite.   The word dendrite means "tree-like," and stellar dendrite snow crystals are common.\n   We can change diffusion in the lab and see how dendrites change.  If one grows snow crystals in air below atmospheric pressure, they have fewer branches.   This is because diffusion doesn't limit the growth so much at lower air pressures, so the branching instability is not so strong.  At higher pressures, more branches appear. \n \n   The growth of snow crystals depends on a balance between faceting and branching.  Faceting tends to make simple flat surfaces, while branching tends to make more complex structures.  The interplay between faceting and branching is a delicate one, depending strongly on things like temperature and humidity.  This means snow crystals can grow in many different ways, resulting in the great diversity we see in snow crystal forms.
509539
Climate & erosion can effect mountain formation & evolution.\n\nFormation\nThe climate will determine the types of rocks that exist before & during the formation of a mountain. Chemical & mechanical weathering changes pre-existing rocks. The actual orogeny will determine the final outcome of the rocks as they are usually metamorphosed during this time. Depending on the final type of rock formed, rates of erosion may increase or decrease. Some rocks are more resistant to erosion than other such as silicon dioxide.\n\nEvolution\nAs the mountains form, climate plays a role in the erosional process. Wetter climates tend to have more erosion by water. In drier climates wind will determine the amount of erosion. Climate determines how fast or slowly rocks will erode.\n\nAs mountains erode, they will readjust in height in a process called isostatic adjustment. Mountains have "roots" that reach deep in the earth. The earth's crust is much thicker here versus other parts of the continental crust.\n\nWhen you take the weight off by erosion, the mountain rises slightly therefore will not change in height. This is much like stacking several wooden blocks in a pail of water. When you take one block off the rest will rise in response.\n\nHowever, time & rates of erosion will determine the ultimate fate of a mountain. At some point, the mountain will eventually rise to it's capacity. When it has reached this limit, it is possible for the mountain to erode to the surface.
556264
Most people would find this funny but there is actually a strong relation between the two. The latest researches in the field indicates a direct implication shifting reason for highly populated areas. \n\nIt is not due to drawing underground water or fossil fuel but its due to sustained pressure torques generated due to heavily populated areas. Its not the weight of a human body but due to all the infrastructure we create to sustain that population. The high rise buildings, the constant shifting of load patterns shear the tectonic plates over  long period of time and it may lead to internal imbalances leading to earthquakes.\nVery intelligent question!
338480
That is a good & interesting question.\n\nIn all logical aspects, this should occur due to the fact that everything in nature trys to balance out. This includes things like air pressure; it travels from high to low areas of pressure. In the same manner, everything that is uphill or of higher elevation trys to balance w/ those that are of lower elevation; hence erosion & drainage basins in general.\n\nIn order for this to occur, a lot of sediment would have to be washed into the drainage basin's streams & rivers. That would take a very long time.\n\nAlthough I think the answer here has to do with the fact that the earth's crust rebounds in a process called isostatic adjustment.\n\nWhen material is removed from the crust to another location, weight is taken off of an area. The crust will readjust to the former height by rising slightly.\n\nIt's just like placing several blocks of wood in a container of water. As you take off one of the blocks, the rest of them will rise in response to the reduced load.\n\nThats my answer & I'm sticking to it.\n\n:)
239288
they are forms of water or precipitation
725747
Nobody seems to have figured this out yet. The rock in the canoe displaces a volume of water equal to its mass, as part of the total displacement of the canoe. When you drop the rock overboard, it displaces a volume of water equal to the volume of the rock. Since rock is denser than water (assuming we're not dealing with pumice here) the rock now displaces less water than it did in the canoe. So the water level in the pool will fall.\n\nIn the case of pumice or other floating rock, it displaces its mass in water in either case and the water level is unchanged.