Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
26 Cards in this Set
- Front
- Back
|
largest freshwater reservoir for humans
-14% of the freshwater on Earth - in usa 40% of the water used by humans is groundwater |
water beneath the surface
|
|
|
drinking
irrigation industries needs |
uses for water
|
|
|
unsaturated zone
|
the area above the water table where openings in soil, sediment, and rock are not saturated but filled mainly with air
|
|
|
zone of saturation
|
zone where all open spaces in sediment and rock are completely filled with water
|
|
|
groundwater
|
water in the zone of saturation
|
|
|
water table
|
the upper level of the saturated zone of groundwater
*except for storm events, the tops of streams/rivers, lakes/ponds is the water table level |
|
|
porosity
|
the volume of open spaces in rock or soil
|
|
|
permeability
|
a measure of a material's ability to transmit water
|
|
|
aquifier
|
rock or soil through which groundwater moves easily
|
|
|
well
|
an opening bored into the zone of saturation
|
|
|
aquitard
|
a layer of soil/rock that hinders water movement
|
|
|
aquiclude
|
a layer of soil or rock that is impermeable
|
|
|
cone of depression
|
a cone shaped depression in the water table immediately surrounding a well
|
|
|
drawdown
|
the difference in height between the bottom of a cone of depression and the original height of the water table
|
|
|
perched water table
|
a water table located in the zone of aeration (unsaturated zone) due to an impermeable layer
|
|
|
spring
|
a flow of groundwater that emerges naturally at the ground surface
|
|
|
hot springs
|
groundwater heated by:
magma chamber water circulation to deep depth (1 degree per 100 feet) |
|
|
geyser
|
column of hot water
|
|
|
karst (typography)
|
a topography consisting of numerous depressions called sinkholes
|
|
|
caverns
stalactites soda straws - small hollow stalactites stalagmite columns - when a stalactite and stalagmite meet sinkholes (sinks) |
feature of a karst (6 of them)
|
|
|
relative dating
|
rocks are placed in their proper sequence or order. only the chronological order of events is determined
|
|
|
radiometric dating
|
the procedure of calculating the absolute ages of rocks and minerals that contain radioactive isotopes
|
|
|
fossil succession
|
fossil organisms that succeed one another in a definite and determinable order, and any time period can be recognized by its fossil content
|
|
|
cavern
|
a naturally formed underground chamber or series of chambers most commonly produced by solution activity in limestone
|
|
|
stalactites
|
the icicle-like structure that hands from the ceiling of a cavern
|
|
|
stalagmite
|
the column-like form that grows upward from the floor of a cavern
|
