pdf, 16.6 MB
pdf, 16.6 MB

Help your children to learn about sound with this complete topic guide. This PDF includes information about:

* How sounds are made,
* How sounds travel,
* The speed of sound in different materials,
* How the ear works,
* How animals detect vibrations and hear sounds,
* The volume of sounds,
* The loudest noise in human history,
* Pitch.

A glossary of related vocabulary is also included.

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