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高中地理第四章在讲地球的内部圈层时指出:“地震波有纵波(P波)和横波(S波)之分。纵波的传播速度较快,可以通过固体、液体和气体传播;横波的传播速度慢,只能通过固体传播。”为什么纵波可以通过固体、液体和气体传播,而横波只能通过固体传播?这一问题,可从如下两方面进行理解: 一、什么叫横波和纵波在波动(简称波)现象中,根据质点振动的方向和振动传播方向间的关系,可将波动的形式分为横波和纵波。 1.横波:若质点的振动方向与
Chapter 4 of high school geography states in the inner circle of the earth that “seismic waves are divided by longitudinal waves (P waves) and transverse waves (S waves). P-waves propagate relatively fast and can propagate through solids, liquids and gases; shear waves Can only propagate through solids. ”" Why can longitudinal waves propagate through solids, liquids and gases, and shear waves can only propagate through solids? This problem can be understood in two ways: First, what is a shear wave and According to the relationship between the direction of particle vibration and the propagation direction of vibration, the longitudinal wave can be divided into transverse wave and longitudinal wave in the phenomenon of wave (referred to as wave). 1. Stroke: If the particle vibration direction and