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6.3 Photochemical Smog
Test Description: Environmental Systems and Societes Photochemical Smog
Instructions: Answer all questions to get your test result.
1) ___ are used on factory stacks to remove gases and particulates.
A
Filter Strips
B
Filters
C
Emission reducers
D
Scrubbers
2) An air pollution prevention mechanism found in vehicles is a ___.
A
Electrostatic precipitator
B
Combustion chamber
C
Catalytic converter
D
Scrubber
3) A primary pollutant is one that ___.
A
reacts with other primary pollutants
B
starts with a prime number
C
has rainbows and sunshine
D
is put directly into the air by human activities
4) Which of the following in not an example of VOCs (Volatile Organic Compounds) ?
A
paint and paint thinners
B
smog
C
gasoline
5) Smog or ground ozone forms in the troposphere. Which pollutants are most responsible for photochemical smog or ground ozone?
A
volatile organic compounds (VOCs) and nitrogen oxides
B
none of these answers are correct
C
sulfur and particulate matter
D
carbon monoxide and carbon dioxide
6) Which product of incomplete combustion gives photochemical smog its yellowish color?
A
PANs
B
nitrous oxides (NOx)
C
VOCs
D
ozone (O3)
7) What are 4 characteristics of urban areas with high levels of photochemical smog?
A
Calm winds, dry weather, sunny, many industries and vehicles
B
High winds, wet weather, cloudy, many industries and vehicles
C
Located in a basin or surrounded by mountains
D
Located in a basin or surrounded by mountains, calm winds, dry weather, sunny, many industries and vehicles
8) The principal component of photochemical smog.
A
CO
B
O3
C
SO2
D
Pb
9) A smog forming chemical
A
VOCs
B
NOx
C
Pb
D
CO
10) A smog forming group of molecules
A
Pb
B
CO
C
PM (particulate matter)
D
VOCs
11) Source: burning of wood, diesel and other fuels, agriculture, unpaved roads. | Health effects: nose and throat irritation, lung damage, bronchitis | Environmental effects: the main cause of haze that reduces visibility
A
particulate matter (PM)
B
O3
C
VOCs
D
SO2
12) What is the most important thing in a photochemical reaction?
A
temperature
B
pressure
C
sunlight
D
catalyst
13) The amount of primary pollutants in the air increases during ___.
A
low traffic
B
night time
C
sunlight
D
high traffic
14) Ozone and acid rain are both pollutants formed through reactions in the atmosphere. This makes them ___.
A
atmospheric transport
B
atmospheric deposition
C
secondary air pollutants
D
primary air pollutants
15) Industrial smog differs from photochemical smog because ___.
A
it forms from smoke and sulfur dioxide emissions mixing with fog
B
it only forms in dry, sunny areas
C
it is formed from PANs and VOCs
D
it comes from factories and not only combustion in motors
16) Which weather phenomena would be expected above the city found within a sunny, dry topographic basin?
A
reverse convection
B
orographic lifting
C
temperature inversion
D
photochemical lifting
*select an answer for all questions
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