as we go on in the desert we find that there is water available but it is just the shadow formed, what do we call this imaginary shadow formed in the desert?
208289
A mirage - like the hotel in Las Vegas.
454258
Go to this web site and read what is there:\n\nhttp://schools.matter.org.uk/Content/Seismology/shadow_zone.html\n\nBasically, there are two kinds of seismic waves from an earthquake or an underground nuclear explosion. These are called P waves and S waves. The S waves cannot travel through the liquid rock surrounding the earth's solid core, so this core creates a "shadow" for those waves. A different kind of "shadow" is created for P waves as they refract at the liquid/solid interface.\n\nHope this helps. Fascinating stuff seismography!
604008
plato.stanford.edu/entries/desert/
44477
A mirage is a naturally occurring optical phenomenon. The kind most commonly seen (inferior mirage - where the inverted image lies below the upright one) is produced by the refraction of light when it passes into a layer of warm air lying close to a heated ground surface. In deserts, mirages may give the appearance of a lake or other large body of water in the distance; as the previous writer stated, this is actually an image of the sky being refracted back up from the warm air lying over the sand.
186539
Water..We always have the exact same amount on earth. It just keeps changing forms.
499404
Ok you need a bowl of water and the sun. The energy is trapped (at least temporarily) in the water, as heat.
240837
B Steam. Steam is the gases form of water. all of the rest are liquid forms of water. Note: what a lot of people think of as steam is not steam. Steam is an invisible gas, once it cools it becomes fog, clouds, and eventually mist. \n\nI had to add this because one of the previous persons was correct in noting that Clouds are sometimes made of ice crystals, so steam is still the most correct answer, but real clouds that are frozen is also correct.
163277
That is the irrigation system for crops.  No, it is not aliens or anything like that.  They are in most farming areas, not just New Mexico.  Arizona, California also have them.
502562
It would post probably be sunlight.......some plant organisms may survive without water for long periods of time, such as ones in the desert....... but sunlight is required for green plants to make food  which unlike for humans......... food is the bigger priority than water
163431
to brandijo-ALL of it was under water.  That's how limestone, sandstone, and shale form.  Once the layers of rock were there water eroded them on a large scale to form the canyon.  The top layer at grand canyon is called Kaibab limestone and it is about 200 million years old.\n\nAs for strange things about grand canyon...In the canyon use to live a native american tribe called the Anazi(sp?).  They disappeared and no one knows where or why they went.  Their cliff dwellings have been explored and it's like one day they just up and left and didn't bother to pack like they were coming back someday.\n\nAnother strange incident is the story of a newlywed couple that disappeared on their honeymoon.  I can't remember their names or the details, but there is quite a bit about it in the book "Over the Edge: Death in Grand Canyon"  Really great book.
140732
Basically all of the surface of Mars except small ice caps (frozen CO2) qualifies as desert - no free water, no rain. The major geographic (or areographic, from Ares - Greek for Mars) features were named after elevations etc. when all the information about Mars came  from early telescopes.\n\nThe Wikipedia article linked below has a topographic map.
411969
Clouds are formed from water molecules combining together. The reason why the clouds get dark are because the molecules are so compact, the light can't get though it as well. It's like in the ocean. The further down you go, the darker it gets because there is more water molecules combined above than their is light. So basically the darker the cloud, the more likely your gonna get rained on!! AHAHAHA
6564
In geography, a desert is a landscape form or region that receives little precipitation. As a consequence, deserts have a reputation for supporting very little life. Compared to wetter regions this may be true, although upon closer examination, deserts often harbor a wealth of life that usually remains hidden (especially during the daylight) to preserve moisture. Approximately one-third of Earth's land surface is desert.\n\nThe world's great deserts were formed by natural processes interacting over long intervals of time. During most of these times, deserts have grown and shrunk independent of human activities. Paleodeserts, large sand seas now inactive because they are stabilized by vegetation, extend well beyond the present margins of core deserts, such as the Sahara. In some regions, deserts are separated sharply from surrounding, less arid areas by mountains and other contrasting landforms that reflect basic structural differences in the regional geology. In other areas, desert fringes form a gradual transition from a dry to a more humid environment, making it more difficult to define the desert border.\n\nThese transition zones have very fragile, delicately balanced ecosystems. Desert fringes often are a mosaic of microclimates. Small hollows support vegetation that picks up heat from the hot winds and protects the land from the prevailing winds. After rainfall the vegetated areas are distinctly cooler than the surroundings. In these marginal areas, human activity may stress the ecosystem beyond its tolerance limit, resulting in degradation of the land. By pounding the soil with their hooves, livestock compact the substrate, increase the proportion of fine material, and reduce the percolation rate of the soil, thus encouraging erosion by wind and water. Grazing and the collection of firewood reduces or eliminates plants that help to bind the soil.\nRio Puerco Basin of central New Mexico\n\nOvergrazing has made the Rio Puerco Basin of central New Mexico one of the most eroded river basins of the American West and has increased the high sediment content of the river (photograph by Terrence Moore).\n\nThis degradation of formerly productive land-- desertification--is a complex process. It involves multiple causes, and it proceeds at varying rates in different climates. Desertification may intensify a general climatic trend toward greater aridity, or it may initiate a change in local climate.\n\nDesertification does not occur in linear, easily mappable patterns. Deserts advance erratically, forming patches on their borders. Areas far from natural deserts can degrade quickly to barren soil, rock, or sand through poor land management. The presence of a nearby desert has no direct relationship to desertification. Unfortunately, an area undergoing desertification is brought to public attention only after the process is well underway. Often little or no data are available to indicate the previous state of the ecosystem or the rate of degradation. Scientists still question whether desertification, as a process of global change, is permanent or how and when it can be halted or reversed
118781
I think it's real water when they made it look like it was raining, just like they do for Universal studios. Have you ever been there before? If not, they have a piece of equipment to rain when they want it to. The water prior to that I think was done by CG. It would have to be as well as physial special effects. Hope this helps.=>
31919
The United States has several large deserts.  The main ones are the Mojave, the Great Basin, the Chihuahuan and the Sonoran.  Each on has differnt types of plant and animal life that differentiate them from the others.  There are far too many facts to mention about deserts without knowing exactly what you are looking for so I am going to post a source for more info.
416103
Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals\nThere are morer information in scientific system.
315380
C. Silicon (sand) and oxygen (think of all of the air and water(h2o)