The musical instrument that produces sound by vibrating its air column is ____.

A musical instrument that produces sound by plucking it is ____.

In this picture, sound can travel through ____.

Ahmad is at swimming pool.

There is music coming out from a loudspeaker beside the pool.

How can Ahmad hear the music when he is underwater?

Picture that shows sound travels through air is ____.

There are 8 metal bars in the xylophone for making different notes (do - re - mi - fa - sol - la - si - do). If we hit them one by one, which bar will make a sound as "mi"?

If we tap or hit the bottle, the highest pitch will be produced by bottle ____.

If we blow the bottles to produce sound, the highest pitch will be produced by bottle ....

Ahmad plucked strings of different lengths. The correct order from higher to lower pitch is ....

How to change the sound volume of a guitar become louder?

The tool for measuring the volume of the sound is ____.

The more gently we blow a flute, the ____ the sound produced.

Study the table below. From the table above, which level of sound is produced by falling leaves?

Unwanted sound is called ____

To muffle the traffic noise from the highway we can ____.

There is a very loud sound at the airport. To reduce the volume of sound that enters our ear, we can use ___.