Chapter 12 Flashcards
Groundwater (20 cards)
The groundwater is found in the subsurface in
the pores of the rock
The storage capacity of an aquifer is measured by
porosity
The ability of the groundwater to flow is measured by
permeability
A fractured volcanic rock has a lower porosity than a sandstone.
FALSE
The zone that is partially saturated with water is known as:
Vadose
An area where the groundwater flow intersects the surface is known as
spring
An impermeable layer that confines an aquifer is known as
aquitard
The higher the hydraulic gradient the ___ the groundwater flow.
faster
The cone of depression on the water table is caused by:
well extraction.
One of the stream features of karst topography is __ patterns.
disappearing
The cave depositional features where dripstones hang from the ceiling are known as
stalactites
A sinkhole occurs by the:
collapse of the cavern ceiling.
When the rate of ground extraction is larger than the aquifer recharge,
subsidence occurs.
For an aquifer the contaminated point source must be __ than the assessed area.
higher
A groundwater flow is in the order of:
a few centimeters per day
Clay has…
high porosity and low permeability.
Artesian wells are associated with:
confined aquifers
Which rock makes a better aquifer?
Sandstone
Groundwater can flow into a lake.
TRUE
Cavern growth on carbonates is enhanced by the presence of a fault
TRUE
