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represents the largest reservoir of fresh water that is readily available to humans. |
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the dissolving action of groundwater produces |
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groundwater is an equalizer of.. |
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groundwater is water that completely fills... |
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the pore spaces in sediment ad rock in the subsurface zone of saturation. |
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the upper limit of this zone is the |
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above the water table where the soil, sediment, and rock are not saturated. |
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the interaction between streams and groundwater takes place in one of three ways... |
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1. streams gain water from the inflow of groundwater 2. they lose water through the streambed to the groundwater system or 3. they do both, gaining in some sections and losing in others. |
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the interaction between streams and groundwater takes place in one of three ways... |
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1. streams gain water from the inflow of groundwater 2. they lose water through the streambed to the groundwater system or 3. they do both, gaining in some sections and losing in others. |
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materials with very small pore spaces hinder or prevent groundwater movement |
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consist of materials with larger pore spaces that are permeable and transmit groundwater freely. |
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the primary factors influencing the velocity of groundwater flow are |
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the slope of the water table and the permeability of the aquifer. |
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occur whenever the water table intersects the land surface and a natural flow of groundwater results. |
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openings bored into the zone of saturation, withdraw groundwater and create roughly conical depressions in the water table known as cones of depression. |
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occur when water rises above the level at which it was initially encountered. |
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when groundwater circulates at great depths, it becomes heated. if it rises, the water may emerge as... |
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groundwater is heated in underground chambers, expands, and some water quickly changes to steam, causing the geyser to erupt. |
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what is the source of heat for most hot springs and geysers? |
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what are 4 of the current environmental problems involving groundwater? |
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1.overuse by intense irrigation 2.subsidence caused by groundwater withdrawal 3. saltwater contamination and 4. contamination by pollutants. |
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in limestone at or below the water table when acidic groundwater dissolves rock along lines of weakness, such as joints and bedding planes. |
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the various dripstone features found in caverns are collectively called.. |
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landscapes that to a large extent have been shaped by the dissolving power of groundwater exhibit... |
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karst topography, an irregular terrain punctuated with many depressions, called sink-holes or sinks. |
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