Photochemical Smog - Assessment

1.

Multiple Choice

45 sec

1 pt

Which product of incomplete combustion gives photochemical smog its yellowish color?

PANs

Ozone

VOCs

NO2 (nitrogen dioxide)

2.

Multiple Choice

45 sec

1 pt

Common sources of volatile organic compounds include:

Solvents

Paint and Glue

Some Plants

Petroleum

All of the Above

3.

Multiple Choice

45 sec

1 pt

What are the main characteristics of urban areas with high levels of photochemical smog?

Large, open flat plains with frequent high winds

High winds, wet weather, cloudy, many industries and vehicles

Located in a basin or surrounded by mountains

Located in a basin or surrounded by mountains, calm winds, dry weather, sunny, many industries and vehicles

4.

Multiple Choice

1 min

1 pt

This primary pollutant is a yellowish brown gas and contribute sto the formation of photochemical smog and tropospheric ozone.

sulfuric acid

VOC

nitrogen dioxide

particulate matter

5.

Multiple Choice

1 min

1 pt

Which of the following government agencies is responsible for enforcing the Clean Air Act?

the USGS

the USDA

the EPA

the USDOJ

6.

Multiple Choice

30 sec

1 pt

A principal component of smog
Source: Chemical reaction catalyzed by SUNLIGHT that splits apart NO2 to eventually form this molecule
Health effects: breathing problems, reduced lung capacity, asthma, eye irritation, reduced resistance to disease
Environmental effects: can damage plants!

VOCs

NO2

SO₂

O₃

7.

Multiple Choice

30 sec

1 pt

A smog forming chemical
Source: burning of fossil fuels, cars are a major source, has multiple forms
Health effects: lung damage, respiratory system illnesses
Environmental effects: an ingredient of acid precipitation

NOx

CO

Pb

VOCs

8.

Multiple Choice

30 sec

1 pt

A smog forming group of molecules
Source: are released from burning fuel (fossil fuels or biomass), solvents, paints glues and other commonly used products. They include benzene, methane, formaldehyde and others
Health effects: In addition to smog (ozone) effects, some are carcinogenic
Environmental effects: affects some plants directly in addition to smog effects

PM (particulate matter)

VOCs

CO

Pb

9.

Multiple Choice

30 sec

1 pt

Source burning of wood, diesel and other fuels, agriculture (plowing, burning off fields), unpaved roads , some industry
Health effects: nose and throat irritation, lung damage, bronchitis
Environmental effects: the main cause of haze that redues visibility

VOCs

O3

particulate matter (PM)

SO₂

10.

Multiple Choice

45 sec

1 pt

What is the most important thing in Photochemical reaction?

Light

temperature

pressure

catalyst

11.

Multiple Choice

30 sec

1 pt

The amount of primary pollutants in the air increases during ___________.

sunlight

high traffic

night time

low traffic

12.

Multiple Choice

30 sec

1 pt

What does a Catalytic Converter do?

Prevents overheating in a reaction

Speeds the reaction of fuel conversion

Reduces harmful emissions like NO2 and CO

Prevents production of SO₂

13.

Multiple Choice

30 sec

1 pt

Ozone and acid rain are both pollutants formed through reactions in the atmosphere. This makes them

primary air pollutants

secondary air pollutants

atmospheric transport

atmospheric deposition

14.

Multiple Choice

1 min

1 pt

This atmospheric compound is critical to the planet in its protection against UV radiation, but when found close to the ground is part of photochemical smog that can cause serious health problems.

particulate matter

carbon monoxide

stratospheric ozone

tropospheric ozone

15.

Multiple Choice

30 sec

1 pt

Source: burning of fossil fuels
Health effects: Reduces the ability of blood to bring oxygen to the body cells and tissues.
Environmental effects: May interfere with the breathing of animals

Pb

VOCs

CO

SO₂

16.

Multiple Choice

2 mins

1 pt

The increase in temperature with height in the atmospheric layer, which inverts the temperature-altitude relationship and can worsen air-pollution problems.

dew point

temperature inversion

humidity

saturation

17.

Multiple Choice

30 sec

1 pt

Temperature inversions can _________ air pollution

trap

move

eliminate

18.

Multiple Select

30 sec

1 pt

Which pollutants result from fossil fuel combustion (list all that apply)?

Sulfur Dioxides

Nitrogen Oxides

Tropospheric Ozone

Stratospheric Ozone

Particulate Matter

19.

Multiple Choice

30 sec

1 pt

What is the group of chemicals that are formed from secondary reactions in the atmosphere after things like NO, VOCs, PM, CO and other emissions are released? Hint: It is a main contributor to photochemical smog.

PANs

O3

H2SO4

HNO3

20.

Multiple Choice

30 sec

1 pt

Photochemical smog is a condition in which light-activated tropospheric ozone accumulates with other pollutants such as PANs and PM.

True

False

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