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随着高考改革的不断深入,在2007年高考试题中关于《机械振动和机械波》的试题出现了许多新颖的考查方式,可谓别出心裁,让人耳目一新,本文略作探讨,以供参考.一、描述机械振动和机械波的物理量是高考命题的基础点描述简谐运动物理量有振幅、周期、频率、速度、加速度、相位、相位差等;描述机械波的物理量有振幅、波长、波速、周期、频率等.高考题常给出某一质点的振动图线或某一时刻的波动图线,考查描述机械振动和机械波的物理量是高考命题的基础点.
With the continuous deepening of the reform of the college entrance examination, many new examination methods appeared on the questions of “mechanical vibration and mechanical waves” in the high exam questions of 2007. They are ingenious and refreshing. This article is briefly discussed for reference. I. Description The physical quantities of mechanical vibration and mechanical waves are the basic points of the college entrance examination proposition. The simple harmonic physical quantities include amplitude, period, frequency, velocity, acceleration, phase, and phase difference. The physical quantities describing mechanical waves include amplitude, wavelength, wave velocity, period, frequency, and so on. The college entrance examination question often gives the vibration map of a certain point or the wave diagram of a certain moment, and the physical quantity describing the mechanical vibration and the mechanical wave is the basic point of the college entrance examination proposition.