Unit 13 The water planet (Warming up & Speaking)What do they have in common?Lead-inWithout water, Without water, what would what would happen?happen?Without water, Without water, life would not exist.life would not exist.Water is a must to Water is a must to life.life. World Day for WaterWorld Day for Water is established on 22 Dec is established on 22 December 1992. It is to remind everybody that we shoember 1992. It is to remind everybody that we should try efforts to provide clean drinking water and uld try efforts to provide clean drinking water and know that the water problems are serious and soluknow that the water problems are serious and solutions can help make the difference. tions can help make the difference. 2222ndnd.March.MarchCollect as many words as Collect as many words as possible related to water.possible related to water.watwatererwatwatererriverriverlakelakeoceanoceanfishfishsweatsweaticeicesteamsteamrainrainpropertpropertiesiesWhat properties or characteristics What properties or characteristics do you know about water?do you know about water?colorlesscolorlesstastelesstastelessodorlessodorlessthree formsthree formsfeeling wetfeeling wetabsorbing heatabsorbing heatdissolvingdissolving液体固体 溶解气压 淡水无嗅的无嗅的说明说明依附依附物质物质liquidsoliddissolveair pressurefresh waterodorlessodorlessillustratecling tosubstance /objectThe piece of paper The piece of paper will will cling cling to the cupto the cupBecause of the Because of the air air pressurepressure..Cover a glass of water with a piece of thick paper. Put one hand on the paper and turn the glass upside down. Slowly take your hand away from the paper. What happens? Why?A. Oil floats on the water.A. Oil floats on the water.B. Water floats on the ...
