Unit 2 test Flashcards
……… and …………. occur frequently along the boundaries of the tectonic plates
earthquakes / volcanoes
erosion
the removal of soil, sediment, rock, etc. by weathering from wind, water, and ice
deposition
when particles being eroded are deposited on a surface
what caused the aral sea to shrink
The government diverted the water upstream to cotton farms
Why is it a problem that the water levels in the colorado rivers are decreasing
Phoenix and Las vegas are dependent on the river for hydroelectric power
Positive impacts of dams
Hydroelectric power, flood control
negitive impacts of dams
Block the flow of silt, flooding of homes upstream of the dam
What water ways are connected by the panama canal
Atlantic and pacific oceans
what water ways are connected by the suez canal
mediterranean sea and the red sea
what water ways are connected by the erie canal
atlantic ocean and the great lakes
reservoirs
large natural or artificial lakes used as a source of water supply
irrigation
the method of moving water from a natural source to where it is needed, often for farming
Agricultural terracing
A technique were step are carved into the sides of mountains creating farmland (china, SE asia, andes mountains)
polders
Land created by building dikes to keep water out (netherlands)
Desertifiaction
proccess in which fertile land becomes desert usally due to drought, deforestation, or innappropriate agriculter
Areas of recent deforestation
brazil, madagascar, south asia, indonesia, phillippines
Key causes of air pollution
car exhaust, fossil fuels, oil refineries, pesticides, radioactive fallout
areas heavily affected by acid rain
china, black forest, eastern US and canda
Areas affected by big oil spills
gulf of mexico, Alaska
what caused the disaster at the Chernobyl nuclear power plant inf 1986
A poorly planned power outage test
effect automobiles have on the environment
pollution
loss of habitat
Urdan sprawl, suburbs
effects airplanes have on the environment
Exhaust
loss of habitat
Positive impact of chemical fertilizers
increased agricultural production
negitive impact of chemical fertilizers
Chemicals get into water and kills animals
