高二英语Unit14 The water planet 浙教.pptVIP

Unit 13 The water planet (Warming up , speaking & Listening) Riddle:It’s very important to all the animals and plants.It’s also important to human beings.It’s liquid at room temperature.Every day you keep in touch with it.You can’t live without it. What is it? (a thing) The earth is a water planet. How do we use water in our daily life? Electricity Agriculture Home use Industry Transport Entertainment How much water do you use at home??2 gallons of water is used to wash your hands.2 gallons of water is used to brush your teeth. (if you leave the water running)2 to 7 gallons of water is used to flush a toilet.9 to 12 gallons of water is used to wash dishes in an automatic dishwasher.20 gallons of water is used to hand wash dishes.25 to 50 gallons of water is used for a five minute shower.The average person uses 120 gallons of water per day!?You can not hear a "running" toilet until itis losing 250 gallons of water per day.??? Without water, life would not exist. Water is a must to life. How much do you know about water? 22nd, March propertiesWhat properties or characteristics do you know about water?colorlesstastelessodorlessthree formsfeeling wetabsorbing heatdissolving Experiments12341 Experiment 1 shows how air pressure causes a piece of thick paper to cling to an upturned glass of water.1 Experiment 2 illustrates how substances with different density behave when placed in the same container.2 Experiment 3 is an example of how water dissolves substances and objects.3 Experiment 4 illustrates some of the differences between salt water and fresh water.4 Listening   “The Rime of the Ancient Mariner” is one of Samuel Taylor Coleridge’s masterpieces. It is a long poem, telling a story in the form of ballads .The poem is an excellent example of Romantic poetry and is often read to understand the characteristics of this poetic genre. Listen t