Khan Academy Air Pollution
In the United States, carbon monoxide is a dangerous indoor pollutant that contributes to hundreds of deaths each year. Identify ways the danger from carbon monoxide can be reduced in the home.
1) Don't leave the car running in a closed garage. 2) Install carbon monoxide alarms on each level of the home.
Thermal inversion occurs when a layer of warm air forms over a layer of cool air. Which of the following are characteristics of thermal inversion?
1) Particles are suspended in dense fog. 2) The morning ground is covered in frost.
In the United States, radioactive radon-222 is one of the most common indoor air pollutants and a leading contributor to lung cancer. Identify ways the danger from radon can be reduced in the home. Choose 2 answers:
1) Seal cracks in the basement. 2) Increase ventilation in the home.
Thermal inversion occurs when a layer of warm air forms over a layer of cool air. Which of the following are characteristics of thermal inversion? Choose 2 answers:
1) The region experiences dense ground fog. 2) Low-speed winds blow through the region.
The concentrations of nitric oxide (NO)(NO)left parenthesis, N, O, right parenthesis and nitrogen dioxide (NO2)(NOX2) and ozone (O3)(OX3) are generalized for a large city over a 24 hour period. Which of the following most likely explains why ozone concentration peaks between late morning until early afternoon?
The midday sun provides energy for ozone formation.
Small particulate matter can accumulate as an indoor air pollutant, and when inhaled, it can damage the heart and lungs. Identify ways the danger from particulate matter can be reduced in the home.
Use exhaust vents to move air outside while cooking. Change filters on heating and cooling systems according to manufacturer's directions.
The concentrations of nitric oxide (NO)left parenthesis, N, O, right parenthesis and nitrogen dioxide (NOX 2) and ozone (OX3) are generalized for a large city over a 24 hour period. Which of the following most likely explains why the nitrogen oxides peak in the morning?
Vehicle emissions release large amounts of nitrogen oxides.
Which of the following is a natural source of particulate matter in the atmosphere?
Wildfires
Most suspended particulate matter in the atmosphere comes from natural sources. Which of the following is a natural source of particulate matter in the atmosphere?
pollen; volcanic eruptions
Thermal inversion occurs when a layer of warm air forms over a layer of cool air. Which of the following are characteristics of thermal inversion?
Dew is present on the ground. Particles linger in the air.
The concentrations of nitric oxide (NO)left parenthesis, N, O, right parenthesis and nitrogen dioxide (NO2) and ozone (OX 3) are generalized for a large city over a 24 hour period. Which of the following most likely explains why the nitrogen oxide concentration decreases gradually by late morning?
Nitrogen oxides are converted into ozone.
