酸雨-Acid-Rain

1、19081969Whats the cause of this phenomenon?The main reason is acid rain.Acid rainAcid rainThe forming of acid rain The effects of acid rainThe ways of controlling acid rainThe forming of acid rain Watch the video and then answer the following questions: 1.Normally,the rain water have PH about _.Why?

2、 2. Rain water with PH values less than_is called acid rain. 3.Two air pollutants which form acid rain are_5.6SO2 ,NOx5.6The forming of acid rainSulphur dioxide dissolves in rain water SO2+H2OH2SO3 2H2SO3+O22H2SO4 Nitrogen oxide dissolves in rain water NOx+H2OHNO3 Damage to ForestMake lake more acid

3、icDamage to metals （eg：Iron） Speed Up TheCorrosion Of Ironcorrosion 腐蚀腐蚀The effects of acid rain Acid Rain Effects on Sculpture(雕塑)19081969 Acid rain affects living things and also materials used in building. So what can we do to control the acid rain？DiscussionThe ways of controlling acid rainReduc

4、ing pollution from factories using cleaner fuels controlling the amount of dark smokeReducing pollution from vehicles using electric vehicles taking bus instead of driving car Developing clean energy(清洁能源） Wind power Hydroelectric power Solar power Tidal powerSummary The forming of acid rain The effects of acid rain The ways of controlling acid rainHomeworkLiving organismscars a). Name the gas A. How is it produced? b). Gas B contains nitrogen. Name two possible gases for B. c) Name the gas C.