For grade 6-7, I hope that you enjoyed studying this Strand, Earth and Beyond.

The sound vibrations cause waves of pressure that travel through a medium, such as air, water, wood or metal. Sound energy is a form of mechanical energy. This cloze test to understanding in the sound, suitable for primary science and high school.

Sound wave is made when an object vibrates, or moves back and forth. Your voice is made when your vocal chords vibrate. Sounds are detected by your ears. This worksheet for primary and junior high school to understand in the sounds.