This book contains:
Important things to know about science
* We can change the pitch of a sound. The faster the vibration, the higher the pitch.
* We can change the loudness of the sound. The bigger the vibration, the louder the sound
* Some sounds can cause damage. Sounds can be muffed.
Ages - 9+
Author - Ginn
Publisher - Ginn
Format - Paperback
Pages - 32
Dimensions - 29.5 x 20.5 x 0.3 cm
