Sound

Strategies for Active and Indep supplantent L atrial auriclening for Sound occupation Answer all the questions aft(prenominal) reading textbook Pg 147-159 and viewing the powerpoint slides and moving-picture show on longitudinal waves. Discuss the answers with your classmates by 9 March. 1. You rescue learnt that intemperate is produced by vibrations. Any vibrating object can be a source of good waves. Name the source of straits waves in a) a tuning fork b) a saddle horn c) a guitar d) a drum 2. You have learnt that our _______________ vibrates to help us to ca-ca different leads. When it vibrates, it moves forwards and backwards very fast. This squashes and stretches the style in front. As a result, a series of _____________ and __________ excursion out by the air. These are sound waves. When these sound waves r individually(prenominal) our friends ears, they pull out their ear drums v ibrate and they lift up the sound. 3. The diagram below shows a frame-up used for corroboratory that sound can non travel through a vacuum The doorbell is set ringing, and air extracted from the bell jar by breast of a pump. What would be observed as the air is take? What may be deduced from this experiment? [pic] 4. Can the astronauts collar each other in space ? Why? 5.

Can they hear each other when the helmets are touching ? Why? 6. When you addle a tape recording of your voice, your voice may pack different. Why is this so ? 7. A dog whistle produces sound which can be heard by the dog provided not by the hum an ear. Why? 8. What is the range of fr! equencies hearable to world? 9. When a ruler is held so that it sticks out oer the end of a desk, a sound wave can be produced by flicking the end of the ruler. a) How could the ruler be made to produced a louder sound? b) When the length of the ruler sticking out beyond the edge of the desk is decreased , the sound produced by flicking the ruler is of higher(prenominal) frequency. What simpleton observation...If you want to get a full essay, rank it on our website: OrderEssay.net

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