Which event lead to governments changing policies
- The London smog, they burned soft coal and it caused major air pollution
What are the three sources of air pollution?
- Human sources (stationary)
- Human sources (mobile)
- Natural sources
What causes asthma and chronic bronchitis?
(air pollution and smoking also play a role)
What is pulmonary emphysema?
- The weakening of the wall of the alveoli, they become enlarged and lose their resilience.
What are three things caused by air pollution?
- Birth defects
- Heart disease
- Eye irritation
Is there primary and secondary outdoor air pollutants?
- Yes, secondary is ground level ozone, primary is everything else( co2, NOx, SOx, VOC,
lead, particulate matter)
Are particles larger than 2.5 the most damaging to our lungs?
- No, particles smaller than 2.5 are (PM2.5)
List some qualities about CO2
- Colourless, odourless
True or false, CO2 can be from car exhaust, fireplaces, tobacco smoke, and water heaters?
What does CO2 do to the body?
- It interferes with the delivery of oxygen in the blood to the rest of the body.
What are some of the symptoms?
- Nausea - Death
What forms in any type of combustion process?
Does SOx and NOx help with the formation of acid rain?
Where does NO x travel in the body?
- Lungs, alveoli’s bronchi
What is the cause of SOx?
- Burning of coal, and oil, the extraction of metals from ore.
Is it true that the throat gets damaged from SOx?
What is ozone made of?
- VOC + NO x + Heat + Sunlight = Ozone
Is it usually a summer time pollutant?
What is the difference between photochemical smog, and industrial smog?
- Photochemical smog is from, combustion of engines, industrial fumes that react with the
sun. Industrial smog is from the burning of coal, especially soft coal in a city.
True or false, indoor air pollution contains 2-5 times higher concentration of hazardous
pollutants than outdoor air
What are the symptoms close to?
- Flu symptoms
What are the 6 common indoor air pollutants?
- Radon gas
- Mold and moisture
- Second-hand smoke
- Air dust
What pollutant is made of 6 different fibrous minerals? - Asbestos
True or false, asbestos are not stable even when they are not disturbed.
- False, they are very stable until they are disturbed
What does asbestos affect?
- The membrane surrounding the lungs.
Is formaldehyde a naturally occurring gas?
- Yes, as well as a VOC
What can it be found in?
- Glue or adhesives in pressed wood
- Preservatives in some paints
- Certain insulation materials
Where are common places for mold to accumulate?
- Bathrooms, kitchens gym areas, damp basements
What does mold produce?
- Toxins, spores, irritants
How many compounds does second-hand smoke produce?
- 4000; 40 are carcinogens
What are people at higher risk for?
- Asthma, pneumonia, ear infection, and bronchitis in children
What is radon gas, and how do humans get exposed?
- Radioactive decay of uranium, it dissolves in ground water, then pumped into wells
which humans use for homes
- Also once the air is contaminated, it stays near the ground (its heavy) and toddlers and
infants are at risk of exposure.
What does the term withdrawal mean?
- The total amount of water removed from rivers, lakes and aquifers for any purpose.
Where is fresh water mostly stored?
- Ice caps/glaciers and its not available
How much freshwater is actually readily available?
What are the difference between Canada and China’s fresh water use? - Canada mostly uses it for power plant cooling, while china mostly uses it for agriculture.
What is hydrological poverty?
- The lack of safe drinking water
Why do we want to drink naturally pure water instead of distilled?
- Because it has salts in it that gives us some benefits, and some taste
What are the differences between confined and unconfined aquifers?
- Confined are between two impermeable layers, and is less likely to get
contaminated(water used for households)
What are sources of contamination?
- Pesticides, fert