【PTE真题音频+文本】RL&SST 真题音频系列064-Paper windmill

【墨尔本PTE】【 PTE真题】PTE听力和口语一直是PTE口语考试中最重要的部分,今天墨尔本文波PTE培训学校给大家总结下PTE中的RL真题:



A wind turbine is a device that will convert wind into mechanical movement which we can use the power water pump or electricity generator. Now the power that a turbine creates is obviously dependent on the wind speed. It’s also dependent obviously on the number of sails, the area of the sails and the angle that the sails makes to the wind. So if you can imagine if the turbine blades are flat onto the wind. The wind is just going to sort of bend it, but if they’re a slight angle when the wind hits it. It’s going to turn the blades and we can use that for powering things. Now we’re going to have a go at making some very very simple paper windmills. The sort of things that you can make from the bits and pieces lying around at home and use that to drive a very small generator to power electronic devices.






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