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    				| 1. | STANSFORD INTERNATIONAL HR. SEC. SCHOOLHOLISTIC EDUCATIONNameWORKSHEET-SCIENCESOUNIClassMAX.MARKS:GRADE: IXTICK THE CORRECT ANSWER10 x 1 =1. The density of a medium through which sound propagates is maximum in a region which is called(a) Rarefaction(b) Crestic) Compressiond) Trough.2 Mechanical waves can travel: | 
| Answer» Sound waves are characterised by the motion of particles in the medium and are called mechanical waves. Air is the most common medium through which sound travels. When a vibrating object moves forward, it pushes and compresses the air in front of it creating a region of high pressure. This region is called a compression (C). Hence, option c is correct. thanks | |