Sound is a kind of energy, Sound is all around us, IIt is produced when objects move back and forth. This back-and-forth movement is called vibration., A strong vibration makes more air vibrate and produces a louder sound., Sounds may be pleasant and unpleasant, Pleasant sound, it makes you feel good when you hear it., A very loud and annoying sound is called noise. It is a form of pollution and can be harmfull and can damage your ears., Loss of hearing - Loud sounds can damage the sensitive parts of the ear which will lead to loss of hearing, Disturbance during work activities - One cannot concentrate on doing activities if there is a lound sound, Restlessness - Too much exposure to loud sounds can make a person restless and increase his or her level of stress, DId you know that dogs can hear sounds or noises that human cannot.,

Sound

por
Imprimir
Incrustar

Tabla de clasificación

Tarjetas flash es una plantilla abierta. No genera puntuaciones para una tabla de clasificación.

Estilo visual

Opciones

Cambiar plantilla

¿Restaurar actividad almacenada automáticamente: ?