14 + 15 Test Flashcards
Which elements are found in the inner and outer core of the earth’s interior?
Dense elements; Iron and Nickel
What elements are found in the outer regions of the earth?
Lighter, less dense materials; Silicon, Oxygen, and Nitrogen
What happened at Pompeii?
Volcano (Mt Vesuvius) destroyed multiple Roman cities.
How did people likely die in Pompeii
The toxic (sulfur) gas
Epicenter
The exact point on surface of the earth that’s directly above where the rock ruptures
Hypocenter
Where the rock ruptures, the “focus” of an earthquake
What do the numbers on the Richter Scale represent?
Measures energy (by factor of 10) during an earthquake
Elements in the Oceanic crust
Dense elements; Fe, Mg, Ca
Elements in continental crust
Silicon, aluminum, K, Ca; less dense (granite)
Nonrenewable resources
Fossil fuels (coal, oil)
Metallic minerals
Copper, iron
Potential problems with open pit mining
Toxic groundwater accumulation
Material that is removed from a mine
spoils
Results of mountaintop removal
Spoils dumped to streams and valleys below
Most dangerous mining process for workers
Subsurface mining
What will lengthen the amount of time a renewable resource will last?
Reducing, recycling, reusing; increase reserves instead of taking from it
What does SMCRA stand for
Surface Mining Control Reclamation Act
What does SMCRA do?
Makes sure mining activities aren’t harming the environment (posts bond, which puts money aside for reclamation upfront)
How do you remove Acid Sulfates and heavy metals from leachate
Sulfate reducing bacteria to remove sulfate + acids from leachate
How to lessen impact of mining industry
Mimic how nature deals with waste, resource exchange webs
What is a problem concerning the Colorado River
So many withdrawals that it rarely reaches the ocean
Largest use of water in the US
Irrigation/Agriculture (70%)
How much water do the US industries use?
20%
How much water do residents use in the US?
10%
Is Michigan a high precipitation area
No
Where might people experience water shortages
Areas not near rivers/the sea/water shortages
Advantages of riparian lands along rivers
Increased biodiversity, storm water retention, absorbing nonpoint source pollution
Ogallala aquifer
The world’s largest aquifer
Why is the Ogallala aquifer important?
Massive, old, considered nonrenewable because of its low recharge rate
How does an artesian well form
Well is below water level, taps into pressurized water, functions like a spring
Confined well
Water pressure creates a static water level much higher than well depth (artesian wells)
Unconfined well
Water present w/o clay layer above it, none/little pressure
How does a sinkhole form?
Underground cavern roof collapses after being drained of groundwater
How efficient is Furrow Irrigation
65%
How efficient is flood irrigation
70-80%
How efficient is spray irrigation
75-95%
How efficient is drip irrigation
95%<
What is furrow irrigation
“Peaks and valleys” w/water in between
What is flood irrigation
Water soaks evenly
What is spray irrigation
Water sprayed onto crops
Drip irrigation
Water goes where it needs to
Levee
Holds back water during High precipitation, seasonal
Dike
Permanently holds back water and keeps locations below the sea level from flooding
Dam
Blocks a river (buildup on rear), makes a reservoir or hydroelectricity
Aqueduct
Artificial transport channel that transports water hundreds of miles away
How much of the wetlands of the aral sea have been removed
85%
How has the salinity of the Aral Sea changed?
It has tripled in salinity
Distillation
Heat salt water til it evaporates, leads behind solid water
Reverse osmosis
High pressure, forces saltwater thru membrane filter
What are the 3 largest uses of water in the house
Toilet, bathing, laundry
How can we cut back on water usage?
Cut back on waste, use nutrients in wastewater as soil fertilizer, use composting toilets that convert human fecal matter to soil material
How many coal fired power plants does the 3 Gorges Dam replace?
5
How much stronger is an earthquake that registers a 5 on the Richter Scale as opposed to 2?
1000
The majority of earth’s rock is
igneous
What is the most common element found in the earth’s crust?
Oxygen
What element is found in pyrite that contributes to acid mine drainage?
Sulfur
Why must mining companies post bond prior to permitting?
To restore land area to some acceptable condition
How are bacteria being used in treating effluent from mines?
To reduce sulfur
What is a problem of acid mine drainage in rivers and soils?
Leaching of nutrients from soils
What do tectonic plates move on?
Convection currents
Why is gold smelting so damaging?
Cyanide compounds used in process
How are artesian wells formed?
By a confined aquifer
Where is dammed water colder than the river it flows into?
The bottom
What is one of the problems of uncontained aqueducts?
Evaporation
What is the largest use of industrial water?
Cooling power plants
Underground sand and gravel formations that can store water?
Aquifer
What type of water test measures acidity?
pH
Which type of water test for cloudiness from suspended solids?
Turbidity
What water test measures the amount of calcium and magnesium?
Hardness
What are the problems of coal power plants?
CO2 output, Thermal Pollution, and Hg output
What are the advantages of Riparian lands?
increased biodiversity, storm water retention, absorbing non source point pollution
What type of water would be the warmest and have the least amount of dissolved oxygen?
Slow moving without plants
The zone of aeration is found…
Above the water table and not saturated
Asthenosphere
Outer part of the mantle; semi-molten rock
Lithosphere
Outermost layer of the planet; 100 km thick
The San Andreas fault is an example of a…
Transform fault
Intrusive rock
Forms within the earth
Extrusive
Forms when a rock cools above the earth
spoil banks
highly erodible hills left behind by area strip mining
highwall
wall of dirt left in front of a highly erodible bank
How is metal ore smelted?
Metals are treated with potentially toxic chemicals
What is produced when acid strips metals?
Acid drainage
What are precious metals leached with?
cyanide
How deep are the deepest mines?
3.5 km
How much of water is not returned to the original source?
70%
How many of the world’s population live in river basins?
41%
What is Ogallala used for?
irrigation (20%) and farming (40%)
Advantages of Dams
cheap electricity, reduces downstream flooding, year round water for surrounding crops
Disadvantages of Dams
disrupts aquatic systems, displaces people
Advantages of transferring water
promotes investment, jobs, strong economy
Disadvantages of transferring water
encourages unsustainable use of water in areas it’s not naturally supplied
How can we save waste?
Mimic the way nature does