How groundwater gets under earth's surface???
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.
836785
Typically, headwaters only experience recharge, but a local depression in the land surface can create a window into the groundwater, usually in the form of a lake or swamp.  Water here can flow downstream, and thus can add to discharge.
27398
You can observe this yourself by breathing on a mirror. As the condensation evaporates from the mirror, you have completed the water cycle. Water evaporates into the atmosphere from the ocean, lakes, rivers, and from soil and plants, and even from your skin and breath. When the air reaches saturation (100% humidity) due to cooling or changes in atmospheric pressure (or both) the water condenses  from vapor to liquid (or solid) and falls to earth as rain, snow, sleet, hail, or maybe only as dew. This water may then form streams and rivers and return to the ocean where it may evaporate again into the atmosphere or it may sink into the earth where it becomes groundwater that may take many thousands of years to emerge again, or may be pumped to the surface from a well and used for drinking water or irrigation. It is a continuous cycle that may take only seconds or may take thousands of years to complete the cycle depending on the path of the water.   \n\nWhy do I get the feeling I'm answering your homework question? Now if you'd asked about delta O18 (a heavy isotope of oxygen) I could have told you how the water cycle concentrates water composed of hydrogen and heavy oxygen atoms and how this is used to study paleoclimates using ice cores and sea shells. Have a good day.
188377
I *think* it's because they breathe through their skin - so when the soil and the underground fills up with rain water, they must come to the surface or drown. \n(I'm not 100% sure about this)
63964
Probably zero. Oil pumping does cause subsidence in some areas. This means that the surface of the ground slowly sinks. Terminal Island in the middle of Los Angeles/Long Beach Harbor has dropped almost 25 feet because of oil  and water pumping  and they had to build dikes around it to keep the sea out.\n\nMost of the time when oil is removed from rock it is naturally replaced by water and there is no empty space left behind. The spaces that oil comes out of are very small pores in rock like sandstone and limestone. Try pouring water on a piece of sandstone and you will see it soaks in; these are the pores that can hold oil. The natural strength of the rock prevents any sort of collapse and water fills the spaces as the oil is pumped out. In fact in most oil reservoirs the pressure created by the water is what "drives" the oil out of the rock and into the well..
665382
The Hydrologic Cycle o Water Cycle\n\nThe hydrologic cycle is a conceptual model that describes the storage and movement of water between the biosphere, atmosphere, lithosphere, and the hydrosphere. Water on this planet can be stored in any one of the following reservoirs: atmosphere, oceans, lakes, rivers, soils, glaciers, snowfields, and groundwater.\n\nWater moves from one reservoir to another by way of processes like evaporation, condensation, precipitation, deposition, runoff, infiltration, sublimation, transpiration, melting, and groundwater flow. The oceans supply most of the evaporated water found in the atmosphere. Of this evaporated water, only 91 % of it is returned to the ocean basins by way of precipitation. The remaining 9 % is transported to areas over landmasses where climatological factors induce the formation of precipitation. The resulting imbalance between rates of evaporation and precipitation over land and ocean is corrected by runoff and groundwater flow to the oceans.\n\nThe planetary water supply is dominated by the oceans. Approximately 97 % of all the water on the Earth is in the oceans. The other 3 % is held as freshwater in glaciers and icecaps, groundwater, lakes, soil, the atmosphere, and within life.\n\nWater is continually cycled between its various reservoirs. This cycling occurs through the processes of evaporation, condensation, precipitation, deposition, runoff, infiltration, sublimation, transpiration, melting, and groundwater flow. On average water is renewed in rivers once every 16 days. Water in the atmosphere is completely replaced once every 8 days. Slower rates of replacement occur in large lakes, glaciers, ocean bodies and groundwater. Replacement in these reservoirs can take from hundreds to thousands of years. Some of these resources (especially groundwater) are being used by humans at rates that far exceed their renewal times. This type of resource use is making this type of water effectively nonrenewable.\n\nALSO CHECK\n\nhttp://www.physicalgeography.net/fundamentals/studyguide_ch8.html
139833
I suspect you're referring to the "China syndrome," where a nuclear meltdown could supposedly bore all the way through the earth to the opposite side. This cannot happen. Any meltdown will only bore through the ground until it hits the water table, at which time it will be discharged back into the atmosphere with the steam. Even if there were no water table, the fissile material would stop when it reached the earth's core, since it cannot fight upward against gravity.\n\nThe accident at Chernoybl, if I remember correctly, never even reached the water table. It was controlled by the containment facility.
35014
That's really a very interesting question.  The short answer is that the water evaporates rises to form a cloud and drifts somewhere else (over land, lake or ocean) to fall as precipitation (rain or snow, etc.) returning to where it began but in a different spot upon the planet.  And don't forget that some of the water is broken down in plants to form hydrocarbons (perhaps the wood of a giant sequoia tree).\n\nThe fascinating answer is that some of the precipitation falls at the poles and is locked up for centuries within mile thick glaciers.  Some of the rain drifts to the poles with salt water and is chilled so cold it sinks to the bottom then finds its way to the seven seas in very cold currents that finally wend to the tropics and rise to replace evaporated seawater.  The bottoms of the oceans even at the tropics is dark and icy cold and the entire cycle from pole to tropics and back to the atmosphere can take centuries.  Some of the precipitation can drain into underground rivers and even refill huge aquifers that underlay many contiguous states.  The water in many aquifers has been there for centuries (even since the last glaciers retreated).  Although everything remains in a vague equilibrium (perhaps interrupted by ice ages) a drop of water that evaporates may be taken out or the normal water cycle for hundreds of years at a time.
781652
[edit] Atmospheric convection\nIn the case of Earth's atmosphere, solar radiation heats the Earth's surface, and this heat is then transferred to the air by convection. When a layer of air receives enough heat from the Earth's surface, it expands, becomes less dense and is pushed upward by buoyancy. Colder, heavier air sinks under it and is then warmed, expands, and rises. The warm rising air cools as it reaches the higher, cooler regions of the atmosphere and becomes denser. Since it cannot sink through the rising air beneath it, it moves laterally and then begins to sink. When it reaches the surface again it is heated, and is drawn back into the original rising column.\nSo the answer is D
125194
The Earth consists of several atmospheric, hydrologic, and mainly geologic layers. Its components are the atmosphere, the hydrosphere, the crust, the mantle, and its core. The biosphere is a tiny layer in this composition and is usually not considered part of the physical layers of the Earth.\n\nThe geologic component layers of the Earth are located at the following depths below surface:\n\n0 to 60 km - Lithosphere (locally varies between 5 and 200 km) \n0 to 35 km - Crust (locally varies between 5 and 70 km) \n35 to 60 km - Uppermost part of mantle \n35 to 2890 km - Mantle \n100 to 700 km - Asthenosphere \n2890 to 5100 km - Outer core \n5100 to 6378 km - Inner core \n\nArea:\n\nTotal: 510.073 million km2 \nland: 148.94 million km2 \nWater: 361.132 million km2 \nNote: 70.8 % of the world's surface is covered by water, 29.2 % is exposed land \nLand boundaries: the land boundaries in the world total 251,480 km (not counting shared boundaries twice)\n\nCoastline: 356,000 km\n\nMaritime claims: see United Nations Convention on the Law of the Sea\n\nLand use\nArable land: 10% \nPermanent crops: 1% \nPermanent pastures: 26% \nForests and woodland: 32% \nUrban areas: 1.5% \nOther: 30% (1993 est.) \nIrrigated land: 2,481,250 km2 (1993 est.)\n\n\nContiguous zone: 24 nautical miles (44 km) claimed by most, but can vary \nContinental shelf: 200 m depth claimed by most or to depth of exploitation; others claim 200 nautical miles (370 km) or to the edge of the continental margin \nExclusive fishing zone: 200 nautical miles (370 km) claimed by most, but can vary \nExclusive economic zone: 200 nautical miles (370 km) claimed by most, but can vary \nTerritorial sea: 12 nautical miles (22 km) claimed by most, but can vary \nNote: boundary situations with neighboring states prevent many countries from extending their fishing or economic zones to a full 200 nautical miles (370 km) \n42 nations and other areas are completely landlocked (see list of landlocked countries)
356407
find a mountain, hill, or other land area that is elevated, that collects water.\n\nDig a trench, or path, so the extra water flows through it.\n\nMake sure the path you dig goes into another body of water, like a pond, lake, or other water area.
180042
there is ground water... be ready to be fascinated...
1042930
The water cycle — technically known as the hydrologic cycle — is the continuous circulation of water within the Earth's hydrosphere, and is driven by solar radiation. This includes the atmosphere, land, surface water and groundwater. As water moves through the cycle, it changes state between liquid, solid, and gas phases. Water moves from compartment to compartment, such as from river to ocean, by the physical processes of evaporation, precipitation, infiltration, runoff, and subsurface flow. Movement of water within the water cycle is the subject of the field of hydrology.
137969
im guessing by root u mean plants..\nwell all plants absorb water and minerals through osmosis/diffusion.
71172
You can observe this yourself by breathing on a mirror. As the condensation evaporates from the mirror, you have completed the water cycle. Water evaporates into the atmosphere from the ocean, lakes, rivers, and from soil and plants, and even from your skin and breath. When the air reaches saturation (100% humidity) due to cooling or changes in atmospheric pressure (or both) the water condenses from vapor to liquid (or solid) and falls to earth as rain, snow, sleet, hail, or maybe only as dew. This water may then form streams and rivers and return to the ocean where it may evaporate again into the atmosphere or it may sink into the earth where it becomes groundwater that may take many thousands of years to emerge again, or may be pumped to the surface from a well and used for drinking water or irrigation. It is a continuous cycle that may take only seconds or may take thousands of years to complete the cycle depending on the path of the water.
235582
The salt comes from the deposition a long period of time from  rivers and streams. Earth has salt naturally with in soils and such. Think of it this way, salt Was being deposited at a faster rate than it was being removed over millions of years giving salt water. The oceans are NOT getting saltier, it is in a state of equalibrium currently with the rate of removal over deposition.