Transcript Pollution and recycling - Sonoma Valley High School

Lecture 23.3 Pollution and recycling
Pollution types
Mt. Etna Sicily
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Coal power plant
Natural: volcanic eruptions – dust, toxic
gases, ash released
Human made: waste from manufacturing,
burning fuels, garbage
Air pollution
CH4 + 2O2
CO2+ H2O
Combustion releases
CO2
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21 billion tons a
year
 CO2 is a greenhouse
gas
Effect: world’s
temperature is rising
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Other air pollutants
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NOX compounds +
sunlight creates
smog
Ground-level ozone
makes asthma
worse
Sulfur compounds
make rain pH 4-5
Smog damages
plants, crops
Smog masks in Kuala Lumpur, Malaysia
Water pollution
Causes:
1.
Oil spills
2.
Fertilizers
(Eutrophication)
3. Sewage
4.
Heat pollution
5.
Nuclear
6.
Plastics & other
garbage down
storm drains
Great Pacific garbage patch
fertilizers
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Clear Lake, CA
get into waterways
Extra nitrogen cause
algae blooms
Decaying algae use up
O2 in water
kills fish
Pesticides also enter
the water cycle from
agriculture
Land
contaminants
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Lead – from fuels
before 1970
Dioxin (used in
making paper) causes
cancer
Each person in the US
throws away 1000 lbs
of garbage a year
Landfills pollute
ground water
Reducing pollution
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Cleaner, efficient cars
or carpooling, mass
transit
Less energy use:
turning off lights,
electronics
Re-useable bags for
groceries,
Proper disposal of :
Batteries, electronics,
& other house hold
toxin
Don’t use poisons in
your house or garden
Recycling: the final way to prevent
pollution
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Petaluma methane gas to electricity plant at
Landfill site
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Yard waste into mulch
Table scraps into
compost
Plastic bottles become
clothing
Paper recycling could
eliminate 41% of
landfill space
Metal recycling reduces
mining, habitat
destruction
What can you to do now to have a
clean world in the future?
San Francisco, CA
Linfan, China
1.Name one kind of air pollution.
2.Name one kind of land pollution.
3.Name one kind of water pollution.