1) The system used for keeping the air in a building or vehicle cool a) Air Conditioning b) Fan c) Air Purifier d) nebulizer 2) All the people living in a particular country, area, or place a) people b) society c) citizens d) Population 3) Dynasty, who constructed a............. fan to  a) provide fresh water b) water-powered fan  c) hot indoor air d) courtiers cool. 4) ......... refers to tunnel-like devices out hot indoor air.  a) Air Conditioning b) Windcatchers c) Air Purifier d) Windmill 5) Global warming is the gradual increase in .................. on Earth a) Cold b) Temperature  c) Climate d) dedrees 6) Consisting of  main parts of air conditioners a) a compressor a compressor b) a compressor, a condenser c) a compressor, a condenser, anda compressor d) an evaporator, a condenser 7) The Romans built ................, which were channels that carried water. a) channel b) Aqueducts c) coures d) waterworks 8) studies show that as ..................... rise air-conditioning guse increases. a) incomes b) bridge c) road d) home 9) What year was the air conditioner invented? a) 2000s b) 1900s c) 1800s 10) A chemical substance that can be used to make or keep things cold a) icebox b) Refrigerants c) Conttainer d) ice

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