人教版高中英语课件：unit 13 Warming up and listening.ppt

unit 13 the water planet period 1 warming up & listening how much do you how much do you know about know about waterwater ? ? individual work lets have alets have a water quiz!water quiz! 1. 1. what state is water in at room temperature?what state is water in at room temperature? a. water b.solid c. gas a. water b.solid c. gas 2. the chemical structure of water is_2. the chemical structure of water is_ a. two hydrogen and one oxygen atom a. two hydrogen and one oxygen atom b. two oxygen atoms and one hydrogen b. two oxygen atoms and one hydrogen atom atom 3. the water molecule is polar,that is ,it 3. the water molecule is polar,that is ,it has_ has_ a. two negative and one positive end a. two negative and one positive end b. one negative and two positive end b. one negative and two positive end c. one negative and one positive end c. one negative and one positive end 4.4.if you pour water and vegetable oil if you pour water and vegetable oil into one glass,what happens?into one glass,what happens? a.oil floats on the water. a.oil floats on the water. b. water floats on the oil. b. water floats on the oil. c.they mix together. c.they mix together. 5.will chalk be dissolved if you put it5.will chalk be dissolved if you put it into water? into water? a. yes b. no a. yes b. no 6.whats the sea water?6.whats the sea water? a. its a mixture of dissolved gases a. its a mixture of dissolved gases and solids with fresh water.and solids with fresh water. b. sea water is lighter than pureb. sea water is lighter than pure water. water. 7. 7. does the sea freeze?does the sea freeze? a. yes a. yes b. no b. no 8. whats heavier,sea water or 8. whats heavier,sea water or pure water? pure water? a. sea water b. pure water a. sea water b. pure water 9. put an ice cube in a glass of pure9. put an ice cube in a glass of pure water,what happens? water,what happens? a. it floats in the water. a. it floats in the water. b. it sinks. b. it sinks. 10. put an ice cube in a glass of salt 10. put an ice cube in a glass of salt water, what happens? water, what happens? a. it floats on the water. a. it floats on the water. b. it sinks. b. it sinks. 1.the piece of paper will cling to the cup 1.the piece of paper will cling to the cup because of the air pressure.because of the air pressure. look at the experiments and look at the experiments and explain what happens and why.explain what happens and why. 2.the oil will float above the water 2.the oil will float above the water because ofbecause of the different density of the two. the different density of the two. 3.3.the chalk will be dissolved the chalk will be dissolved because the water because the water molecule is polar,it can break down both solids molecule is polar,it can break down both solids and gases.and gases. 4. the ice cube put in the glass with fresh water4. the ice cube put in the glass with fresh water will float in the water,while the one in salt water will float in the water,while the one in salt water will float on the water will float on the water because the different densitybecause the different density of the water. of the water. listeninglistening the rime of the ancient the rime of the ancient mariner ( by samuel mariner ( by samuel taylor taylor coleridgecoleridge),one of ),one of the most famous english the most famous english poems about life on the poems about life on the ocean,which tells a story ocean,which tells a story of an adventurous sea of an adventurous sea journey.listen to the journey.listen to the story and answer the story and answer the questions.questions. the rime of thethe rime of the ancient mariner ancient mariner listen to part 1 and answer the four questions: 1.who tells the story in the poem? 2.what does one of the sailors do? 3.what do you think will happen next? 4.why are the others sailors frightened? the story is told by a mysterious guest at a wedding. he shoots a bird that flies above the ship. various answers are possible. because the bird is thought to bring good luck because the bird is thought to bring good luck to the ship . to the ship . listen to part 2 and answer the 4 questions: 1.1.what happens to the sailors?what happens to the sailors? 2.2.what happens to the mariner ? why?what happens to the mariner ? why? 3.why is the person telling the story?3.why is the person telling the story? 4. who is the person that tells the story in the poem?4. who is the person that tells the story in the poem? all the mariners die -except for the one all the mariners die -except for the one who shot the bird.who shot the bird. two gods decide that the mariner will live buttwo gods decide that the mariner will live but must always tell his story.must always tell his story. he has to tell his story to everyone he meets.he has to tell his story to everyone he meets. the ancient mariner.the ancient mariner. discussing:what can we learn from the story? all the things living in all the things living in the natural world have the natural world have their own value and their own value and be