Week 13/14 Flashcards
2 settings for hot springs and geysers
Where deep groundwater discharges along faults.
Geothermal regions
Groundwater problems
Septic Intrusion
Saline Intrusion
Contamination Plume
Groundwater transports pollutants away from sources, creates plume.
Limestone dissolution creates unique
karst landscapes.
Darcy’s Law
The rate at which groundwater will flow.
Cave formation is primarily due to
dissolution of carbonic acid.
On desert land, vegetation covers less than ____ of the land.
On desert land, vegetation covers less than 15 percent of the land.
Types of Deserts
Subtropical Rainshadow Coastal Continental interiors Polar
Continental Interior Desert
Air loses moisture as it crosses continents.
Coastal Desert
Cold air cannot hold water vapour.
Bajada
Continuous apron around mountains.
Desert Pavement
Coarse pebbles left over after wind takes fine dust away. Erosion resistant.
Ventifacts
Stones that have been sandblasted by the wind.
Deflation
Lowering of the desert land surface via wind erosion.
Vast area of dunes
sand sea
Calcrete
Calcium carbonate that’s cementing the soil.
Pediment
sloping bedrock
Desertification
Andification of non desert areas as a result of human activities.
Glaciers cover ___ of the Earth and expand to ___ during an Ice Age.
Glaciers cover 10 percent of the Earth and expand to 30 percent during an Ice Age.
Igneous ice
crystallizes from a melt.
Valley glacier
flow like rivers down valleys.
Piedmont glacier
Valley glacier big enough to go out around the base of a mountain valley.
Crevasses form in the
brittle, upper layer of a glacier.
Glacial movement flows like
honey.
