一、知识脉络图二、命题特点1.注重基础知识题,考查基本概念的理解和运用声现象在基础知识的考查方面主要体现在选择和填空题型中,考查的多是一些识记的知识,而且有关题目多属于中考试题中的容易题。此类题目一般考查多个声学知识点的综合题目,要结合相关声学知识点进行分析解答例1下列有关声的说法正确的是()A.在空气中超声波比次声波传播速度大B.声音可以在真空中传播C.噪声不是由物体振动产生的D.利用超声波可以除去人体内的结石 First, the second map, the proposition features 1. Focus on basic knowledge questions, test the basic concepts of understanding and use of sound phenomena in the basic knowledge of the test is mainly reflected in the choice and fill in the blank questions, the test is mostly knowledge of some knowledge , But also related topics are mostly easy questions in the examination questions. Such topics generally examine a number of acoustic knowledge points of the comprehensive title, to be combined with relevant acoustic knowledge points for analysis and answer Example 1 The following statement about the sound is correct () A. In the air than the infrasonic wave propagation velocity of sound B. Sound can Spread in a vacuum C. The noise is not generated by the vibration of objects D. The use of ultrasound can remove stones in the human body