|What does sound travel through?
Sound can travel through all kinds of matter: through solids, liquids and through gases. At first we might not think that sound travels through solids, since walls are build to keep out sounds. But, sometimes we hear laughter or talking from the room the next door.
Drum your finger on a table. Now rest your ear right on the tableís surface and drum your fingers on it again. It sounds louder. Thatís because the sound is traveling through the solid table.
Sound travels through liquids too. Some animals like the whales and dolphins, depend upon sound that travels through the water. Whales sing underwater and can hear each other from more than a mile away.
Every time you speak, you prove that sound travels through gases, since the sound of the voice is traveling through the air, which is made of gases like oxygen.
The speed of sound:
Directions: Answer the following questions.