Quiz 4n Flashcards
Glacier ice will be brittle when it is under conditions of
Lower pressure
Firn is
Partially recrystallized snow
A sharp glaciated mountain peak is called
Horn
Glacial tills are
Angular and poorly sorted
Which moraine is a type of end moraine?
Terminal
Rocks frozen into the bottom of a glacier scrape parallel groves called
Striations
Glacially caved valleys are described as shaped like the letter
U
Darcy’s Law is used to calculate
Velocity of groundwater flow
A rock that is partial barrier to ground water but lets some flow through slowly is called an
Aquitard
In order to have a flowing artesian well you must have
a recharge area at a higher elevation than the well
Below the water table is
the phreatic zone
A feature hanging down from the roof of a cave would be a
Stalactite
If there is more than one water table in an area the higher watertable is
Perched
The rate that water can flow through a rock is the
Permiability
The main factor that caused an increase in the risk of flooding for Orange County between the 1940’s and the 1990’s was
incresed surface runoff due to urbanization
