What pollutant forms when automobile emissions react with oxygen gas and ultraviolet rays?

All of the following are primary air pollutants except

Two-thirds of the sulfur dioxide that pollutes the air is produced by

Which of the following is often used to remove poisonous gases from industrial emissions before they are released into the atmosphere?

Which type of building would most likely have poor indoor air quality?

Schools in the United States have spent over $40 billion to remove

Which of the following pH measurements of rainwater would indicate acid precipitation?

Which of the following contributes most to acid precipitation?

As a lake becomes more acidic, fish are harmed not only by the acidity but also by substances that leach out of the soil into the water. Which of these toxic substances is leached when conditions are acidic?

Most of the pollution that causes acid precipitation to fall in southeastern Canada is released from

Most air pollution is produced by

A true statement about sulfur dioxides is that they are

Activities such as construction and agriculture are primary sources of

A true statement about carbon monoxide is that it

The automobile’s contribution to air pollution includes

Which of the following is a secondary pollutant?

Which of the following would cause the smallest increase in smog in an urban area?

One way radon and asbestos are similar is that they

Which air pollutants can aggravate bronchial asthma in humans and cause fish to suffocate?

Which of the following pollutants is most likely to reach unhealthy levels inside an office building?

Temperature inversions work to trap pollution when

Which of the following activities is the largest producer of primary air pollutants in the United States?

Light pollution can be decreased by

Acid precipitation can be traced back to

When the acidity of soil increases,

30 decibels is ten times stronger than 20 decibels; 20 decibels is ten times stronger than 10 decibels; 10 decibels is ten times stronger than 0 decibels. Therefore, a sound measuring 90 decibels is how much stronger than a sound of 40 decibels?

Particulates can form ____________________ that reduce visibility and cause a variety of respiratory problems. (clouds, pools)

The Clean Air Act, passed in 1970 and strengthened in 1990, gives the ___________________________________ the authority to regulate vehicle emissions in the United States. (FDA or EPA)

In an electrostatic precipitator, gas containing _________________________ is blown through a chamber containing an electric current. (dust particles or ozone)

The ____________________ of air in the atmosphere usually keeps air pollution from reaching dangerous levels. (circulation or stagnation)

Smog results from chemical reactions that involve ____________________, automobile exhaust, and ozone. (rain or sunlight)

Long-term effects on health that have been linked to air pollution include ____________________, lung cancer, and heart disease. (hepatitis or emphysema)

Sick-building syndrome is most common in _________________________ climates where buildings are _________________________ to keep out the heat.
(Choice #1 - warm, tightly sealed) or (Choice #2 - cool, well ventilated)

Radon is one of the elements produced by the decay of ____________________, a radioactive element that occurs naturally in Earth’s crust. (carbon or uranium)

Permanent deafness results from continuous or long-term exposure to sounds over ____________________ decibels. (60 or 120)

When fossil fuels are burned, they release oxides of ____________________ and ____________________. (carbon, argon) or (sulfur, nitrogen)

The lower the pH number is, the more ____________________ a substance is; the higher the pH number is, the more ____________________ a substance is. (Use choices from question #37)

Normal precipitation is slightly _________________________ because atmospheric carbon dioxide dissolves in the precipitation and forms carbonic acid. (basic or acidic)

Aquatic animals are adapted to live in an environment within a particular ____________________ range. (decibel or pH)

Because acid precipitation falls ____________________, the problem of solving acid precipitation has been difficult, especially at the international level. (upwind or downwind)

Almost half of the acid precipitation that falls in southeastern Canada results from pollution produced in _________________________. (Europe or the United States)

A scrubber is a machine that moves ____________________ through a spray of ____________________ that removes many pollutants.
(Choice #1 - water, water) (Choice #2 - Gases, water)

Some indoor air pollutants include _________________________ from dry-cleaning fluid, paradichlorobenzene from air fresheners, and methylene chloride from paint strippers.
(formaldehyde, tetrachloroethylene)

Secondary pollutants form when a(n) ____________________ pollutant comes into contact with other ____________________ pollutants, or with naturally occurring substances such as water vapor, and a chemical reaction takes place.
(Choice #1 - primary, primary) or (Choice #2 - primary, secondary)