Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Public Health
Public Health, water pollution, exam 2
| Question | Answer |
|---|---|
| 1800 gallons of water | used per day per person in USA |
| drinking, industrial, recreation, ablution | 1800 gallons of water |
| ablution | water used for cleaning & waste removal |
| Ganges River in India | source of life for many people |
| surface water | #1 source of drinking water & cooking |
| ground water | #1 source of water (if include agriculture) |
| 3000+ sites | EPA recognizes priority clean up sites of illegal dumping of hazardous materials |
| Times Beach, MO | spraying of roads w/dioxin |
| Times Beach, MO | high levels of cancer |
| Love Canal, NY | Hooker Company contanminated the water |
| 1948-1975 | 800 million tons of DTT sprayed on US soil |
| DDT | impacts calcium in bird egg shells |
| DDT linked to | brain softing, hemmorraghes |
| DDT | use banned in USA |
| USDA | responsible for food inspection |
| FTC | federal trade commission |
| ensures food safety | FTC |
| alternate sources of energy | solar, wind, bioenergy, hydropower, geothermal, hydrogen |
| #1 source of energy | burning coal, oil, natural gas (fossil fuels) |
| aquifer-ogalala | underground source of water |
| largest source of water, covering 10 central states | aquifer-ogalala |
| snow caps source of water | 2.225% |
| fresh water source of water | 0.009% |
| rivers source of water | 0.0001% |
| ocean source of water | 97.134% |
| glaciers source of water | 0.015% |
| saline lakes source of water | 0.007% |
| atmospheric water source of water | 0.01% |
| biological O2 demand | all material in water that needs O2 in degeneration process |
| aeration | removes taste, odor, iron & manganese rendered insoluble, removes dissolved gases CO2. oxygen adds freshness |
| coagulation, precipitation, flocculation | removes chemicals, color, turbidity - aluminium sulfate |
| sedimentation | removes turbidity, organisms, etc |
| filtration (sand bed) | removes much junk, chemicals, etc microbes |
| softening | renderswater more useable |
| hardness of water due to | Ca++, Mg++ ions, Nazeolite is used, Ca & Mg removed, Na added |
| disinfection | Na or K hypochlorite is used, kills microbes (inorganic) |
| absorption | activated charcoal - odor & any taste is removed |
| corrosion correction | bitumen (an inert tar coal product used to surface inside of iron pipes prevents T.B.) |
| uv light | antimicrobial actin might one day replace chlorination |
| water testing basically revolves around | E. coli identification |
Created by:
JYarger
Popular Chiropractic sets