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- 1. Multiple Choice
Air is made up of mostly
Carbon dioxide
Oxygen
Nitrogen
Water vapor
- 2. Multiple Choice
To reduce air pollution, we can
Put on a mask on hazy days
Take the bus instead of driving
Remove the limits on the amount of air pollutants that vehicles can produce
Increase the amount of electricity that we use
- 3. Multiple Choice
Which of the following is FALSE?
Air has mass
Air does not have a particular smell
Air does not have a particular taste
Air is made up of ONLY nitrogen, oxygen, and carbon dioxide
- 4. Multiple Choice
Which of the following is NOT an air pollutant?
Carbon monoxide
Nitrogen
Sulfur dioxide
Dust particles
- 5. Multiple Choice
Which of the following is a possible cause of acid rain?
Acids weaken structures made of metal
Factories dump chemical waste into the river
Acids break down statues made of limestone
Burning fossil fuels release harmful gases into the air
- 6. Multiple Choice
When there is haze, we should NOT
Put on a mask
Go outdoors
Turn on the air-conditioner
Use an air purifier
- 7. Multiple Choice
Which of the following is an effect of haze?
Some people develop breathing problems
Vehicles produce more soot
Factories produce more carbon dioxide
The quality of soil changes
- 8. Multiple Choice
Which of the following is not an effect of acid rain?
Soil becomes too acidic for plants to grow well
Some areas experience flooding
The population of marine animals decreases
Paints on vehicles wear off quickly
- 9. Multiple Choice
Exhaust fumes from some vehicles are black because they contain
Carbon monoxide
Soot
Sulfur dioxide
Carbon dioxide
- 10. Multiple Choice
Why do farmers practice the slash and burn method?
To clear the land for farming
To find water sources for their crops(plants)
To destroy plants that compete with their crops for carbon dioxide
To release carbon dioxide into the air for their crops to grow well
- 11. Multiple Choice
Which of the following about air pollutants are TRUE?
Some of them cannot cause haze
All of them are gases
They are released when we burn fossil fuels to produce electricity
They are released when hydroelectric power stations produce electricity
- 12. Multiple Choice
Which of the following are true?
Air pollution affects only humans
Air pollution can affect humans
Vehicles fitted with filters can increase more air pollution
We can reduce air pollution by wearing masks
- 13. Multiple Choice
Which of the following gases do living things to survive(live)?
Nitrogen
Oxygen
Carbon dioxide
Dust particles
- 14. Multiple Choice
Which of the following gases do plants need to process photosynthesis (to make their own food)?
Nitrogen
Oxygen
Carbon dioxide
Water vapor
- 15. Multiple Choice
Which of the following mode of transports are most-environmental-friendly?
Taking a bus
Taking a taxi
Walking and cycling
Carpooling
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