Groundwater

Groundwater _____. is recharged by precipitation stays in one place and never moves is only found in areas with wet climates exists mostly as underground rivers and lakes

Groundwater forms when precipitation, rain, snow, sleet, hail, or freezing rain soaks into the ground It settles into three main layers- the saturated zone, the water table, and the unsaturated zone. is recharged by precipitation

Which of the following is the most permeable? shale clay gravel nonporous rock

Sand and gravel are highly permeable. Clays and soils with mixed particle sizes have low permeability. gravel

The water table _____. rises and falls with precipitation is the bottom layer of the saturated zone is a layer of porous rock below an aquifer always stays in the same place

The water table can be anywhere from a foot to hundreds of feet below the surface. It is not always in the same place, and it may rise or fall, depending on the amount of precipitation and the amount that people pump out of the ground. rises and falls with precipitation

permeable

allowing a fluid to pass through

porosity

amount of air space between soil or rock particles

Which of the following materials is the least porous? loosely packed gravel sorted sand and rock unsorted sand and rock large pebbles and boulders

large pebbles and boulders

impermeable

not allowing a fluid to pass through

water table

top of the saturated zone in groundwater

aquifer

underground layer of permeable rock from which groundwater can be removed