Bài giảng Tiếng anh Lớp 8 - Unit 7, Lesson 4: Communication - Năm học 2020-2021 - Phạm Văn Quý

CHÀO MỪNG BAN GIÁM KHẢO, QUÝ THẦY CÔ VỀ DỰ HỘI THI GIÁO VIÊN DẠY GIỎI CẤP THCS HUYỆN BÌNH LỤCNĂM HỌC 2020 - 2021NGƯỜI THỰC HIỆN: PHẠM VĂN QUÝ1.6.5.3.4.2.Warm up : LABEL THE POLLUTIONair pollution light pollutionnoise pollution soil pollution visual pollutionwater pollution 7. Thermal pollution8.Radioactive pollutionNoise pollution 1. What is the noise pollution? 2. What should we do to reduce it? English 8UNIT 7 . POLLUTIONPERIOD 58 LESSON 4:COMMUNICATIONWelcome to our class *. EXTRA VOCABULARYvĩnh viễn/ˈpɜːmənənt/- Permanent (adj)- Earplug (n)/ˈɪəplʌɡ/cái nút tai- Affect (v)/əˈfekt/làm ảnh hưởng- hearing loss (n)/ˈhɪərɪŋ lɒs/mất thính lực- blood pressure (n)/blʌd ˈpreʃə/huyết áp- Decibel(dB)Là đơn vị đo mức độ âm thanh1. Noise pollution is more common and more damaging than many people realise. The Green Organisation is doing a survey on how much teenagers know about this type of pollution. Help them answer the questions.QUESTIONNAIREPlease help us complete the questionnaire by circling the correct answer A, B or C.1.Noise is ______ . A. any sound that makes you relaxed and peaceful B. any sound that is loud and constant ( liên tục) C. any sound you hear in the street2. A unit used to measure the loudness of sounds is a decibel (dB). Noise pollution happens when a sound’s loudness is _________. A. more than 30 dBs B. more than 50 dBs C. more than 70 dBs3. Which of the following noises can cause permanent hearing loss after eight hours? A. Motorcycle B. Ocean wave C. Whistling (tiếng huýt còi)4. Which of the following noises can cause immediate and permanent hearing loss? A. Motorcycle B. Concert C. Vacuum cleaner5. If you experience noise pollution for a long time, you can have ____________ and hearing loss. A. headaches B. high blood pressure C. both A and B6.If you are listening to music and other people can hear the sounds from your headphones, what does it mean? A. The sounds are too loud. B. You like the music a lot. C. Other people don’t like the music.7. What is a symptom showing that noise is affecting you? ( biểu hiện) A. There seems to be a ringing or buzzing in your ears. ( tiếng ù ù) B. You jump up and down C. You fall asleep as soon as you lie down in bed.8. Which of the following ways can reduce the effects of noise pollution? ( sự ảnh hưởng) A. Wearing earplugs when you go to concerts or other loud events B. Listening to music through headphones or headsets at safe levels C. Both A and B1. Noise pollution is more common and more damaging than many people realise. The Green Organisation is doing a survey on how much teenagers know about this type of pollution. Help them answer the questions.Please help us complete the questionnaire by circling the correct answer A, B or C.1.Noise is ______ . A. any sound that makes you relaxed and peaceful B. any sound that is loud and constant ( liên tục) C. any sound you hear in the street2. A unit used to measure the loudness of sounds is a decibel (dB). Noise pollution happens when a sound’s loudness is _________. A. more than 30 dBs B. more than 50 dBs C. more than 70 dBs3. Which of the following noises can cause permanent hearing loss after eight hours? A. Motorcycle B. Ocean wave C. Whistling (tiếng huýt còi)4. Which of the following noises can cause immediate and permanent hearing loss? A. Motorcycle B. Concert C. Vacuum cleaner5. If you experience noise pollution for a long time, you can have ____________ and hearing loss. A. headaches B. high blood pressure C. both A and B6.If you are listening to music and other people can hear the sounds from your headphones, what does it mean? A. The sounds are too loud. B. You like the music a lot. C. Other people don’t like the music.7. What is a symptom showing that noise is affecting you? ( biểu hiện) A. There seems to be a ringing or buzzing in your ears. ( tiếng ù ù) B. You jump up and down C. You fall asleep as soon as you lie down in bed.8. Which of the following ways can reduce the effects of noise pollution? ( sự ảnh hưởng) A. Wearing earplugs when you go to concerts or other loud events B. Listening to music through headphones or headsets at safe levels C. Both A and B QUESTIONNAIRE 2. Compare your answers with those of a classmate. How many different answers have you got?2. Compare your answers with those of a classmate. How many different answers have you got?3. Now listen to a short presentation about noise pollution. How many correct answer have you got?1. Noise pollution is more common and more damaging than many people realise. The Green Organisation is doing a survey on how much teenagers know about this type of pollution. Help them answer the questions.Please help us complete the questionnaire by circling the correct answer A, B or C.1.Noise is ______ . A. any sound that makes you relaxed and peaceful B. any sound that is loud and constant C. any sound you hear in the street2. A unit used to measure the loudness of sounds is a decibel (dB). Noise pollution happens when a sound’s loudness is _________. A. more than 30 dBs B. more than 50 dBs C. more than 70 dBs QUESTIONNAIRE 3. Which of the following noises can cause permanent hearing loss after eight hours? A. Motorcycle B. Ocean wave C. Whistling 4. Which of the following noises can cause immediate and permanent hearing loss? A. Motorcycle B. Concert C. Vacuum cleaner5. If you experience noise pollution for a long time, you can have ____________ and hearing loss. A. headaches B. high blood pressure C. both A and B6.If you are listening to music and other people can hear the sounds from your headphones, what does it mean? A. The sounds are too loud. B. You like the music a lot. C. Other people don’t like the music.7. What is a symptom showing that noise is affecting you? A. There seems to be a ringing or buzzing in your ears. B. You jump up and down C. You fall asleep as soon as you lie down in bed.8. Which of the following ways can reduce the effects of noise pollution? A. Wearing earplugs when you go to concerts or other loud events B. Listening to music through headphones or headsets at safe levels C. Both A and BAudio script. Noise is constant and loud sound. To measure the loudness, or volume of sounds, people use a unit called decibel. When a sound is louder than 70 decibels, it can cause noise pollution. Do you know that the noise from a vacuum cleaner or a motorcycle can result in permanent hearing loss after eight hours? The sounds of a concert are even more serious. They can reach as high as 130 decibels and may cause immediate and permanent hearing loss. Noise pollution can also lead to headaches and high blood pressure. If you are listening to music through headphones, and other people can hear it, it means the music too loud and unsafe. If there seems to be a ringing or buzzing in your ears, it means the noise is affecting you and damaging your hearing. Wearing earplugs when you go to concerts or other loud events, and listening to music through headphones or headsets at safe levels can help you reduce the effects of noise pollution.What is the noise pollution? 2. What should we do to reduce it? 4. Discuss. Watch a video clip, work in four groups. Write down the types of sound that cause of noise pollutions, their decibels and the sollution.(After watching the video, you have 2 minutes to discuss and write down )Types of soundDecibelsSollutions.4. Discuss. Watch a video clip, work in four groups. Write down the types of sound that cause of noise pollutions, their decibels and the sollution.(After watching the video, you have minutes to discuss and write down )Types of soundDecibelsSollutions.4. Discuss. Watch a video clip, work in four groups. Write down the causes of noise pollutions, their decibels and the sollutionThe answer should beTypes of sounddecibelssollutions1. Traffic851. Wear earplug or noise - canceling earmuffs2. Lawn mower902. Turn down the music 3. Power tools1003.Don't stand too close to the speaker.4. MP3 player1104. In the loud events step outside a few minutes for every hour to give your ears a break.5. Motorboat1106. Rock concert1157. Sport events137.68. Jet engine1409. Rocket launch180HOMEWORK Learn new words Do the exercises in workbook Prepare for the next period (Unit 7 Skills 1).