groundwater
when will a perched water table develop
When a horizontal aquitard above the regional water table lies below an aquifer
which of the following describes an aquifer
a saturated, porous, and permeable layer or stratum
which of the following describes an artesian well
a well in which water rises above the top of the aquifer without any pumping
which of the following describes a disappearing sinking creek
an influent stream in the karst area
Which of the following statements concerning unconfined aquifers on barrier islands and atolls is correct?
any salt water in the aquifer will rise if the water table is lowered by pumping
what is the common rock forming mineral or mineral group is most readily dissolved by groundwater
calcite
which of the following describes the configuration of an unconfined water table around a pumping well
cone of depression
what is the relationship between the cone of depression associated with a pumping well?
drawdown is the distance between the original water table and the water level well
How would hazardous substances such as gasoline, kerosene, ethyl alcohol, pesticides, and acids that accidentally entered a groundwater system behave?
gasoline and kerosene would float on the water table; ethyl alcohol would disable and disperse in the groundwater
which of the following is NOT a speleothem
geyserite
what reservoir contains the next highest percentage of earth freshwater after ice sheets and glaciers
groundwater
name two characteristics in all aquifers
high porosity and high permeability
which of the following statements defines the aerated or vadoze zone
lies above the water table
the hot spring deposits of yellowstone nation park are travertine. what rock probablylies somewhere beneath the hot springs
limestone
what characteristic of rocks and or soil controls the ease of groundwater transmission
permeability
what term describes the volume of voids or open spaces in a rock or unconsolidated material
porosity
what force pushes groundwater from pore to pore below the water table
pressure gradient and hydraulic gradient
Which of the following materials would have the best capability to naturally remove sewage pollutants?
slightly clayey sand
what is the name of an icicle-like speleothem that grows down from the roof of a cavern
stalactite
which of the following are specific features of karst topography
streams flow into depressions called sinkholes and continue to flow underground
which of the following best describes the water table
the blunder between saturated rock below and unsaturated rock above
what is the unconfined water table
the boundary between the aerated, or vadose, zone and the saturated zone below
what can be a result of excessive groundwater withdrawal
the water table may drop or decline in elevation
which of the following best describes how geysers erupt
with a slight reduction in pressure, water in a saturated, natural conduit suddenly boils sending a plume of steam and hot water into the air above the vent
where are the most extensive geothermal features in the world located?
yellowstone national park