exam 3 Flashcards

(86 cards)

1
Q

Geology

A

Study of dynamic processes taking place on the earth’s surface and in its interior
Three major concentric zones of the earth
Core
Hot minerals
Mantle
Less dense region, magma
Crust
Complex mineralogical composition, iron, calcium, aluminum, on the land
Continental crust
Oceanic crust = 71% of crust

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2
Q

mineral

A

Naturally occurring chemical element or inorganic compound that exists as a crystalline solid

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3
Q

Rocks

A

brandt, limestone sandstone
We mine for gold and salt

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4
Q

Rock cycle

A

Named by the way in which they form

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5
Q

Sedimentary rock

A

Formed thru transportation of water, wind, gravidity, accumulate in layers (sandstone, limestone shale)
Tiny particles of weathered and eroded types of rocks deposited and accumulate in layer

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6
Q

Metamorphic rock

A

Existing rock subjected to high temperatures, pressures, fluids, or a combination

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7
Q

Igneous rock

A

Forms under intense heat and pressure then cools

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8
Q

Tectonic plates

A

Convergent
Plates moving toward each other, collide
Volcano, mountain ranges
Divergent
Move away
Transform plate boundary
Move in opposite directions BUT PARALLEL

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9
Q

Ore

A

Deposit in earth’s crust with one or more valuable minerals
Contrians profitable concentration of a minera
High grade or low grade
High grade ore more sustainable to mine

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10
Q

Rare earth minerals

A

Produce lots of waste
China dominates in processing

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11
Q

Fossil fuels

A

Oil, coal and natural gas → remains of plants, animals, microbes
Living things
Accumulation of organic matter
Exist in finite amounts

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12
Q

surface Mining

A

Surface and stip mining
Removes shallow deposits
Extracting deposits in horizontal beds close to the earths surface

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13
Q

Open pit mining

A

Dig large pits to remove ore

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14
Q

Mountaintop removal

A

Explosives to remove top of mountain to expose underground area for access

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15
Q

Environmental probs of mountaintop removal

A

U pollute water bodies
More erosion
Risk of flooding

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16
Q

Subsurface mining

A

Underground shafts elevators tunnels to get to mineral

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17
Q

Human health effects - resource extraction - mining

A

Ore extracted by mining
Ore mineral
Tailings is the waste polluted water slurry
Chemicals in here
Could be leftover sediment

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18
Q

Smelting

A

Roast ores heat ores
Heat and chemicals
Result
Air pollution
Water pollution

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19
Q

Human health effects

A

Dangerous for miners- can develop black lung

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20
Q

Video

A

Using toxic mercury to aggregate the gold
And it goes back into the soil via waste

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21
Q

What can WE do

A

Recycle
Waste less
Use less
Find a substitute
Do without

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22
Q

Biomining

A

Using living organisms to mine particular minerals of interest
Microorganisms able to clean salt water

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23
Q

Volcanoes

A

Release molten rock from the earth’s interior
Magma rising to earth’s surface thru a fissure in earth’s surface
Eruption: release of hot ash into the air
Mt vesuvius destroy pompeii

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24
Q

Earthquake

A

Breakage and shifting of rocks
Occurs at a fault

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25
Seismic waves
Vibrations in the crust
26
Focus
Origin of where earthquake occurs Magnitude of earthquake is the severity
27
Haiti
Experienced a 7.2 magnitude earthquake
28
Richter scale
It measures magnitude of the earthquake (amplitude of wave) Largest recorded: 9.5 in chile, 1960
29
Earthquakes on the ocean floor
Cause tsunamis Series of huge waves generated when ocean floor suddenly rised or drops December 2004-indian ocean tsunami Magnitude 9.2 230,0000+ lost lives Japan Nuclear radiation from it
30
Glaciers
Sheets of icermed from snow pack Most occur on land but can extend out to sea Climate change recedes them Distinct landforms Mounded hills: moraines, drumlines Bodies of water: kettle lakes
31
Atmosphere
Composition of gases 78% nitrogen and 21% oxygen
32
Innermost layers of the atmosphere
Troposphere Stratosphere
33
Ozone
Helps filter harmful UV radiation
34
Greenhouse gases
CO2, methane, nitrous oxide, water vapor Can trap heat in the atmosphere - like a blanket They are natural, we need them to survive
35
Urban heat island effect- a microclimate
Urbanized areas that experience higher temps than outlying areas Albedo effect How much sunlight is reflected from earth's surface, then held onto. Light surfaces reflect more than darker surfaces
36
Benefits of tree planting
Stormwater retention Provide shade Thermoregulation, evapotranspiration aesthetic Not absorbing heat thru black top
37
Ice
Has a high albedo effect- what does this mean as we are seeing more sea ice melting? Positive feedback loop, melting contributes to more melting
38
Understanding climate and climate change
Ice cores Annual tree rings → tells u tree age, thru ring space indicating growth during that year Helps understand earlier climates Real time atmospheric CO2 measuring
39
Climate change
Increases in CO2 increases in temp
40
IPCC
Intergovernmental panel on climate change Scientists + gov representatives to review causes effects and data surrounding climate change Every 6-7 years or so Aim to limit going 1.5 degrees above the pre industrial temperature Temperature over time (form pre industrial) to keep it under
41
2024
Hottest year on record by NASA We went above the 1.5 degree rise
42
Main greenhouse gases
CO2 Produced abundantly over the last decades in the atmosphere Methane Pools holding waste releasing agriculture Landfills + agriculture main ways Why we compost
43
Fugitive emissions
unintentional emission Thru extraction, delivery of fossil fuels (like pipelines)
44
Climate change effects
Global warming See ice reduction Dying polar bears See temps rise Melting glaciers
45
Flooding
Sinking bc ground water being taken up for agriculture/ residential areas Areas design cities to have canals
46
Video
Manila does not have ability to weather the storm bc reefs help in stormwater management Storms overall get stronger, that the areas can fight off tho as readily as erosion and other stuff
47
How do we know recent change is caused by humans
They look at models of temp change And fossil fuel consumption Deforestation Natural volcanic eruptions does not follow human factors
48
Policy
Paris climate agreement International climate change agreement each country expected to lower GHG emissions with the overall goal of limiting the earth's average temp increaser to below 2 degrees celsius - pre industrial level 1.5 degrees → decided it is better not to go above
49
Solutions to climate change
Clean energy tax credits EPA regulations on power plants Auto industry regulations-switching to EV vehicles
50
Carbon tax
If you pollute air you have to pay a tax
51
Carbon cap and trade
Cap on how much carbon can be emitted that the gov sets Permits or allowances for companies to emit a certain amount
52
geoengineering
Having a mirror in space that reflects part of the sunlight so it does not hit the surface
53
Air quality
Europe has probs with air pollution
54
Air pollution
Presence of chemicals in the atmosphere harming organisms
55
Natural sources
Windblown dust, wildfire residue, volcanic eruptions
56
Human sources
Power Plants Industrial facilities Motor vehicles
57
Clean air act
Natural ambient air quality stickers 6 criteria pollutants Transportation powerplants- main emitters of pollutants, PM particulate matter Sulfur dioxide Carbon monoxide Nitrogen dioxide Ozone in the stratosphere (troposphere its a pollutant
58
Primary pollutant
Released directly from the source into the air in a harmful form Carbon, sulfur
59
Secondary pollutant
Converted to a hazardous form after they enter the air or are formed by chemical reactions as components of the air mi and interact Ozone Needs sunlight to form that reaction
60
Major outdoor air pollutants
Sulfur dioxide and sulfuric acid Harmful pollutants Colorless corrosive gas Coal and oil Ore go thru smelting that can release sulfur dioxide into the atmosphere Water vapor and sulfuric acid → breaking down chlorophyll in leaf acid rain, statues disintegrating
61
Nitrogen oxides
Highly reactive gasses that forms with nitrogen heated air to a particular temperature in the presence of oxygen Can react w water= nitric acid Nitric acid and sulfuric relate to acid rain
62
Acid rain
Rainfall in 1986 more acidic bc more sulfur dioxide issues + nitrogen oxide pollution Seen in forests at high altitudes dying off
63
Cap and trade benefit
Worked well in bringing down pollution for sulfur dioxide Step 1. U set a cap for how much pollution can get into atmosphere Give permits and allowances The flexibility marketing economics comes in that if one powerpoint is under allowance they can sell it to another power plant that wants to emit more The cap is lowered over 5 years Forced companies to adopt diff technologies, to lessen emissions
64
Pollutants and fire
Carbon monoxide Colorless odorless toxic gas, from incomplete combustion of fuel (coal, oil, fuel, gas) Makes hemoglobin unable to hold oxygen + deliver it to cells Emit thru transportation and fires 90% of it in the atmosphere gets converted into carbon dioxide Particulate matter Solid particles of, dust, lint, smoke, pollen Reduce visibility Damage lung tissues Wildfires in canada → ppl had school cancelled
65
Indoor pollution
Wind charcoal fires increase the amount of pollution indoors Cigarette smoke, chemicals in building materials
66
Additional pollutants
Ozone Secondary pollutant, volatile organic compounds combines with sunlight lead to it like formaldehyde and chlorine (coughing, breathing prob) Lead Industrial and mining, smelting of metal ores, older houses have lead paint Liquid mercuries being used to release gold Or used to burn coal Impacts arsenic, nickel and lead
67
EPA
Made over 30 rules to roll back mercury and other pollutants Lee zelden
68
Effects of pollution
Asthma Chronic bronchitis Muscle spasms constricting airways Emphysema When permanently restricted ti is emphysema
69
What can we do
Dilution is the pollution? No Converting to more renewable energy Air filter, remove particulates in smoke stacks (industry) China had rlly polluted air Beijing is the smog capital of the world Required industry to bring down pollution
70
Clean air legislation
Pollution going down From emission controls Cap and trade with sulfur dioxide - went down
71
Oceans
97% of all water on planet Freshwater 3% Most trapped in ice/glaciers
72
Evaporations
liquid water to gas
73
Precipitation
turns liquid water into gas rain, hail, returns to earths surface
74
Infiltration and surface runoff
Water falling from the sky Seeping into the ground stored as ground water If it does not go into the ground it becomes runoff, back to the ocean Used for irrigation→ we use alot of ground water
75
More intense storms
Bc the air is warmer and holding more moisture leading to more storms and significant storms
76
Rain shadow effect
Prevailing winds traveling up the mountain picking up moisture from the ocean Cooling letting moisture go, coming down other side of mountain starts to fall and warm up Air conditions on leeward side Windward side is more lush bc more rainfall Ex. death valley CA
77
Wetlands
The composition of the soil permanently or seasonally saturated and specific plants will determine if area is a wetland
78
Ecosystem services
Prevent erosion Storing water Prevent flooding Biodiversity Birding Canoeing Kayaking Re supply groundwater Vegetation can filter pollutants breakdown toxic waste
79
Groundwater storage
Zone of aeration Where plants get moisture from Zone of saturation Where the ground water is
80
Water table
Distinguished between the zone of aeration and saturation
81
Aquifer
Porous layers of sand, gravel, rock below the water table Wetlands help recharge the aquifer Reservoirs for ground water
82
what's the problem
Pulling groundwater causes sinking Rely on food production happening using too much water
83
Ogallala aquifer
Irrigation pumps are pumping out water Over watering is bad Using additional resources for over watering is bad Cant naturally recharge if water is pumped to fast Ones near the shore can have saltwater infiltrate making it unusable
84
Utah's environmental nuclear bomb
Lake is drying from drought,snowcap, population using too much water Water evaporation
85
Effects of lake drying
Impact ook with high risk disease, when water exposes sediment of the lake bed which can blow metals in the atmosphere respiratory issues, lung cancers, more pollutants
86
What to be done for water shortage
Solutions is maybe we should stop building in places that cannot support human dev and growth People start wearing gas masks