Groundwater

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An aquifer is...

A satutrated, porous, and permeable layer or stratum

............. accounts for the largest usage of groundwater in the United States

Agriculture and Irrigation

Which of the following statements is TRUE concerning unconfined aquifers in urbanized coastal areas

Any salty water in the aquifer will rise if the water table is lowered by pumping

Whast is the relatiopnship between drawdown and the cone of depression nassociated with a pumping well

Drawdown is the distancde between the original water table and the water level in the well

which one of the following is NOT a speleothem

Geyserite

...... are characteristics found in all good aquifers

High porosity and high permeability

..... is a coefficient that takes into account tyhe viscosity of the fluid and the permeability of the aquifer

Hydraulic conductivity

which of the following areas is underlainh by karst topography

Kentucky

.... controls the ease of groundwater transmission through a porous material

Permeability

........ is another name for the zone of saturation

Phreatic zone

is the volume of voids or open space in a rock or unconsolidated material.

Porosity

would have the largest capacity to unnaturally remove sewage pollutants

Slightly clayey sand

.... occur where the water table intersects Earths surface and natural outflow of groundwater occurs

Springs

Which one of the following concerning stalactites and stalagmites is NOT true

Stalagmites form on the floors of caves below the water table

...... are specific features of karst topography

Streams flowing into depressions and continuing underground

which one of the following statements is TRUE for an artesian aquifer

TYhe water table in the recharge area is at a higher eluviation that the top of the aquifer in the subsurface

Which one of the following can logically be concluded by speleothems/ dripstone hanging from a cave roof

The cave roof was above the water table when the speeothems formed

Which of the following concerning artesians is NOT true

When the well penetrates the aquifer, the water rises to the bottom of the aquitard above the aquifer

Which of the following best describes how geysers erupt

With a slightb reduction in pressure, water in a saturated, natural conduit suddenly boils, sending a p;lume of hot steam and hot water into the air above the vent

Where are the most extensive geothermal features in the world

Yellowstone National Park, United states

The water table is

a boundry between saturated rock below and unsaturated rock above

A perched water table developes when ....

a horizontal aquitard above the regional water table lies below an aquifer

highly impermeable layersa such as compacted clay or shale are known as ......

aquitards

Wghat term describese a groundwater system in which water in a well rises above the top of the aquifer without use of a pump

artesian

Which common roch forming mineral or mineral group isn most readily dissolved by groundwater

calcite

Lowering of the water table around a pumping well results in a

cone of depression

Darcys law allows for the calculation of .....

discharge

Which example best demonstrates groundwaters power as an erosional agent

dissolution of limestone leading to sinkholes and caverns

depositional features created by dripping of water over great spansd opf time are cdalled ....

dripstone

What term describes a stream which recieves water through the inflow of groundwater through the stream bed

gaining stream

a hydrothermal vent that periodically or occassionally erupts a column of steam and hot water is called

geyser

After Ice sheets and glaciers,............ contains the next highest percentage of Earths freshwatwer

groundwater

The water table slope is known as the ....

hydraulic conductivity

The unstaurated zone

lies above the water table

the hot spring deposits at Momoth Hot Springs, Yellowstone National Park, are travertine. What rock probably lies somewhere beneath the hot springs

limestone

Which of the following geological materials would have the highest groundwater velocities nand be the least effective in removing unwanted pollutants from the water

limestone; numerous solution channels and fractures widened by dissolution

Water staurated muds have low ....... but can have greater.... than well cemented sandstone

permeability; porosity

What term denotes the percentage of open space or voids in a material

porosity

What force pushes groundwater from pore to pore below the water table?

pressure gradient or hydraulic gradient

a network of recharge wells can help correct the problem of ...

saltwater intrusion

A ...... is the icicle like speleothem that growsd down from the roof of a cavern

stalactite

A stream is said to be losing stream when ....

the channel bottom is above the local water table

The term KARST TOPOGRAPHY was first used in ....

the republic of Slovenia, a province of the former Yugoslavia

Excessive groundwater withdrawels can cause....

the water table drops or declines in eluviation

Which of the following is responsible for the most daily indoor per capita water use in an average single family home in america

toilets

Karst developement occurs more rapidly in ...... climates

tropical

An artesian well is one in which ________.

water rises above the top of the aquifer without any pumping

The near surface zone that contains some of the water that soaks into the ground is called the

zone of soil moisture


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