Bài giảng môn Tiếng Anh - Unit 9: Undersea world

LDBwelcome to our class Designed by Ho Minh ThaiUnit 9Undersea WorldBefore you read Work with a partner. Look at the map and give the Vietnamese names for the oceans on the map.1. Pacific Ocean2. Atlantic Ocean3.Indian Ocean5.Arctic Ocean4.Antarctic OceanThái Bình Dương Đại Tây Dương ấn Độ DươngBắc Băng DươngNam Băng DươngThe names of the oceansJT.SS..SealJellyfishTurtleSharkNEW WORDSjellyfish (n)Starfish (n)fishes Submarine (n) Biodiversity (n) sự đa dạng sinh họcWater current (n) New words3. beneath (prep) [bi'ni:θ]4. Challenge (v) (n) [‘t∫ổlindg] 5. marine life (n) [mə'ri:n] [laif]6. Investigate (v) [in’vestigeit]7. organism (n) ['ɔ:gənizm]8. To be at stake [steik]1. bay (n) [bei]2. mystery (n) ['mistəri]vịnh bớ ẩndướithử thỏch, thỏch thứccuộc sống dưới biểnĐiều tra, nghiờn cứusinh vật Đang bị đe doạ Read the passage and do the task that follow 	There is only one ocean. It is divided into five different parts: the Pacific, Atlantic ,Indian, Antarctic, and Arctic Oceans. There are also many other smaller seas, gulfs and bays which form part of them. Altogether they cover 75 percent of the earth’s surface. For centuries, people have been challenged by the mysteries that lie beneath the ocean. However, today’s scientists have overcome may of the challenges of the depth by using modern devices. They send submarines to investigate the seabed and bring samples of marine life back to the surface for further study. Satellite photographs provide a wide range of information, including water temperature, depth and the undersea populations. If modern technology did not exist, we would never have such precious information	Marine plants and animals fall into three major groups. Some of them live on or depend on the bottom like the starfish. Some are swimming animals such as fishes and sharks that move independently of water currents while others are tiny organisms that are carried along by the currents like the jellyfish. Plants and animals of the sea, however small or oversized, all contribute to its biodiversity. Unless this biodiversity were maintained, marine life would be at stake. II.While you readTask 1The words in the box all appear in the passage. Fill each blank with one of them.There are more words than needed gulfoversizedbiodiversitychallengesinvestigatetinysamplesprovideSome plants and animals are referred to as ....... organisms because they are extremely small Thanks to modern technology, scientists have been able to.............. the life of plants and animals that live under the sea.A .. is a large area of sea that is party surrounded by land......... is a term that refers to the existence of different kinds of animals and plants which make a balanced environmentThese scientists have collected different ............. to analyse for their experiment.tinyinvestigategulf..Biodiversity samplesTask 2Answer these questions1. What percentage of the earth’s surface is covered by seas and oceans?75% of the earth’s surface2. How do scientists now overcome the challenges of the depth?By using modern devices3. What can submarines do to help scientists know about the undersea world?They investigate the seabed and bring samples of the marine life back to the surface for further study4. What can we learn from the satellite photos?We can know a wide range of information, including water temperature, depth and the undersea populations5. What are the three groups of marine plants and animals?They are those that live on or depend on the bottom like the starfish, those that move independently of water currents and those that are carried along by the currents6. What would happen if the sea biodiversity were not maintained?The marine life would be at stake if the sea biodiversity were not maintainedIII.After you readComplete the summary of the reading passage by filling each blank with a word or phrase given in the box belowplants and animalsdiscoveries hugeclosely connectedmodernthree-quartersmysteriousbiodiversityDespite covering (1)..........................of the earth’s surface, the ocean has remained (2).....................to us until recently. With (3)...................technology we have now made important(4).........................about the (5).........................of marine life. We have learnt that whether tiny or (6)................,all the(7)............... of the sea are (8)...........................three-quartersmysteriousmoderndiscoveriesbiodiversityhugeplants and animals closely connectedDespite covering (1) three- quaters of the earth’s surface, the ocean has remained (2)mysterious to us until recently. With (3) modern technology we have now made important(4)discoveries about the (5) biodiversity of marine life. We have learnt that whether tiny or (6) huge,all the (7)plants and animals of the sea are (8) closely connectedHome work- Learn by heart all the new words - Write a short paragraph within 100 words about undersea world. Tell me what we should do to protect marine plants and animals - Study part B - speakingThanks for your attention!