Air Quality and Air Pollution

What is air pollution?

• Any harmful substance that builds up in the air 

• pollen, dust, gases

• industrial pollution

• chemicals in the water

Tags

NGSS.MS-ESS3-4

Pollution hanging over urban areas that causes reduced visibility is called

• Air pollution

• Temperature inversion

• Light pollution

• Smog

If the the air quality index is 30, it is safe for everyone to go outside.

• True

• False

If the air quality index for the day is 105, it is unhealthy for ALL people.

• True

• False

Nitrous oxides enter the atmosphere from _____________________.

• fossil fuels

• meteorites

• ozone depletion

• CFC's

Ozone

• Primary pollutant

• Secondary pollutant

Temperature inversions can _________ air pollution

• trap

• move

• eliminate

Particulates can be removed from smokestack emissions by which of the following methods?

• Exhaust-stream aeration

• Catalytic converters

• Electrostatic precipitators

• Irradiation by UV light

Tags

NGSS.HS-ESS3-4

NGSS.HS-ETS1-3

Ground-level ozone in most major United States cities results primarily from

• motor-vehicle exhaust

• producing electric power

• burning coal

• burning fuel for cooking

Tags

NGSS.MS-ESS3-4

Which of the following best explains the cause of the trend shown in the graph for lead emissions in the United States from 1970 to 2011 ?

• Unleaded gasoline was first introduced in 1974, and amendments to the Clean Air Act required cars with the model year 1975 or later to use only unleaded gasoline.

• New air-scrubber technologies were introduced in the late 1970s that effectively removed lead in the air and converted it into water vapor.

• Beginning in 1975, The Clean Air Act required new cars to have catalytic converters, which effectively converted the lead found in gasoline to water vapor.

• By 1990, all new model cars were equipped with internal fabric filters that effectively filtered car exhaust and reduced lead emissions.

Tags

NGSS.MS-ESS3-4