Reduction of Air Pollutants

How does using crushed limestone in coal-fired power plants reduce pollution?

• It increases the efficiency of coal burning

• It acts as a fuel substitute

• It reduces the amount of coal needed

• It captures sulfur dioxide as calcium sulfate

Tags

NGSS.MS-ESS3-3

NGSS.MS-ETS1-1

Which of the following is NOT listed as a way to reduce emissions?

• Riding bikes instead of driving cars

• Using more coal-fired power plants

• Conserving electricity

• Eating less meat

What does the Clean Air Act allow the EPA to do?

• Close factories that produce air pollutants

• Ban all air pollutants

• Set acceptable levels of six different criteria air pollutants

• Mandate the use of electric cars

What is a vapor recovery nozzle used for?

• To measure the amount of fuel dispensed

• To increase the speed of fueling vehicles

• To capture volatile organic compounds at gas stations

• To reduce the cost of gasoline

Tags

NGSS.MS-ESS3-3

What does a catalytic converter do?

• Captures carbon dioxide from the atmosphere

• Increases fuel efficiency by 50%

• Reduces the noise produced by a vehicle

• Converts carbon monoxide into carbon dioxide

Tags

NGSS.HS-ETS1-3

NGSS.HS-PS1-5

What do wet and dry scrubbers remove from emissions?

• Only particulate matter

• NOx, SOx, and VOCs

• Only carbon dioxide

• Only water vapor

How does an electrostatic precipitator work?

• By cooling the emissions stream

• By using a negatively charged electrode to attract particles

• By filtering emissions through water

• By converting pollutants into harmless gases

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the function of a baghouse filter?

• To capture and recycle carbon dioxide

• To reduce the noise pollution from factories

• To filter water before it is released into rivers

• To trap particulate matter in bags

Tags

NGSS.MS-ETS1-2

Why is conserving electricity mentioned as a way to reduce air pollution?

• Because it increases the efficiency of appliances

• Because it decreases demand on coal-fired power plants

• Because most electricity is generated from renewable sources

• Because it reduces the need for battery production

What is the main benefit of raising CAFE standards?

• Increasing the speed limit on highways

• Decreasing the amount of air pollutants by requiring better fuel economy

• Mandating the use of electric vehicles

• Reducing the overall cost of transportation

Tags

NGSS.HS-ESS3-4