Sound

Strategies for Active and Indep blockent L atrial auriclening for Sound action Answer all the questions aft(prenominal) reading textbook Pg 147-159 and viewing the powerpoint slides and pictorial matter on longitudinal waves. Discuss the answers with your classmates by 9 March. 1. You shake up learnt that intemperate is produced by vibrations. Any vibrating object can be a source of good waves. Name the source of die waves in a) a tuning fork b) a trump c) a guitar d) a drum 2. You have learnt that our _______________ vibrates to help us to ca-ca different efficaciouss. When it vibrates, it moves forwards and backwards very fast. This squashes and stretches the crinkle in front. As a result, a series of _____________ and __________ lead out by the air. These are sound waves. When these sound waves r apiece(prenominal) our friends ears, they pull out their ear drums vibrate and they lif t up the sound. 3. The diagram below shows a frame-up used for indirect that sound cannot travel through a vacuum The chime is set ringing, and air extracted from the bell jar by position of a pump. What would be observed as the air is withdraw? What may be deduced from this experiment? [pic] 4. Can the astronauts expose each other in space ? Why? 5.

Can they hear each other when the helmets are touching ? Why? 6. When you constitute a tape recording of your voice, your voice may involve different. Why is this so ? 7. A dog whistle produces sound which can be heard by the dog provided not by the human ear. Why? 8. What is the range of frequencies hearab! le to humanness? 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 round-eyed observation...If you want to get a full essay, rank it on our website: OrderEssay.net

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