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课件网) Unit 6 Electricity everywhere 主题范畴： 人与自然；人与社会 主题群： 环境保护；科学与技术 子主题： 环境污染及原因，环保意识和行为；科学技术与工程，人类发明与创造 Key question What role does electricity play in our daily lives understand why electricity is important. explain different ways of producing electricity. observe safety rules for using electricity. talk about how to save electricity. Unit objectives 单元目标 I can: New words against prep. 紧靠；碰；撞 speed n. 速度；速率 electric car 电动汽车 Lead in Do you know how these cars work They use electricity. Pre-listening How much do you know about electricity Discuss the questions in pairs. (1) Is electricity an invention or a discovery (2) How fast does electricity travel (3) Is the electric car a new idea When was it first invented While-listening Interesting facts about electricity (1) Who first discovered electricity (2) How we produce electricity today (3) How electricity travels to our home (4) When the first electric car was invented (5) How much electricity is wasted each year in the UK and the USA Listen to a podcast about electricity and tick ( ) the topics mentioned in it. Listen again and complete the notes. smooth stone light the first electric car the second half of the 19th century billions of pounds offices Tapescript Good evening. Thanks for joining me in this week’s The Natural World. I’m Rebecca. Tonight, I’ll share some interesting facts about electricity with you. First of all, as you may already know, electricity was not invented. It was discovered. But do you know when it was first discovered Many believe that electricity was first discovered by the ancient Greeks more than 2500 years ago. They produced electricity by rubbing fur against smooth stone. Next, do you know how fast electricity travels The answer is the speed of light. That is about 300 million meters per second. Another interesting fact is about electric cars. They are very popular now, but the idea is not new. British inventor Robert Anderson invented the first electric car around 1832. However, this car was not very useful. It wasn’t possible to drive electric cars until the second half of the 19th century. Finally, we are always trying our best to make good use of this energy. But according to a report, billions of pounds of electricity is wasted every single year in the UK. And another report shows that in the USA, about 30% of the electricity used in offices each year is wasted. This just shows how important it is to save electricity in our daily lives. That’s all from me today. I hope you enjoyed learning a bit more about electricity. What other interesting facts about electricity do you know 电鳗：这类生物能产生高达600伏甚至更强的强大电击。它们利用这种电来捕猎、自卫和交流。电鳗腹部有三对产生电的器官：主器官、亨特氏器官和萨克斯氏器官。这些器官由电细胞构成，电细胞是专门用于储存和释放电能的特殊细胞。 本杰明 富兰克林与风筝实验：1752年 ... ...
