Contents What is Sound Page How Sound Travels page Pitch page Volume 18 How Sounds Are Made 21 Activity page 28 Glossary Further reading Index page page page 30
What IS Sound Sounds are all around us A dog barks A bell rings A motor hums All this sound is a form energy of
We hear sound when something vibrates or moves back and forth The vibrations travel in waves Our ears catch the waves and hear sound the
