True: Sound is created when something vibrates, You blow a trumpet to make a sound, The size of the vibration of a sound is called amplitude, Sounds get quieter over distance, There are three main parts to the ear, False: You need to hit a guitar for it to make a sound, A Police car siren makes a quiet sound, If you hit a drum with rice on it nothing happens to the rice, There are five small bones inside our ears, Playing loud music all the time won't affect your hearing,

Sound

由
打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？