Gariirka codka

All sounds are caused by vibrations. Some vibrations are too small or too fast to see. The volume of a sound means how loud or quiet it is. The pitch of a sound means how high or low it is. Amplitude is a measure of the distance or size of a vibration. The greater the amplitude, the louder a sound. Frequency is a measure of how often the vibrations occur. The greater the frequency, the higher the pitch. Sounds of different volume and pitch can be produced by controlling the amplitude and frequency of vibrations.