SO Unit 1

1 Humans cause a significant amount of air pollution by burning _____ fuel.

• Natural

• Renewable

• Electric

• Fossil

2 What effect of air pollution causes millions of people to die each year?

• Global Warming

• Damage to the Ozone layer

• Acid Rain

• Lung cancer, Heart disease and other health problems

• All of the above

3 What color of the Air Quality Index (AQI) tells us that the air outside is ‘unhealthy’?

• Blue

• Green

• Yellow

• Red

• Purple

4 What greenhouse gas is released by the burning of fossil fuels?

(Hint: Its chemical formula is CO2)

• carbon dioxide

• carbon monoxide

• phosphate

• sulfur dioxide

5 According to IQAir 2020, what was the rank of Vietnam in terms of air pollution?

•  11th

• 41st

• 31st

• 21st