Tony I Mrs. Branin 5 th Grade

How Sound is Produced Brass Vibrating Air Woodwind Vibrating Reed Percussion Vibrating Surface Strings Vibrating Strings

Vibration-A back and forth motion Sound Waves- vibrations spreading away from a vibrating object

Tuning pegs are turned to tighten or loosen strings. When you press the frets, you change the length of the vibrating portions of the strings. A thicker string vibrates slower and produces a lower pitched sound than a thinner string A thinner string vibrates faster and produces a higher pitched sound than a thicker string

Compression- The part of a sound wave where molecules are crowded together. Rarefaction-The part of a sound wave where molecules are spread apart.

Solids-Can sound also through solids and liquids? You can tell that sound travels through solids just by putting your ear onto a tabletop. If someone taps the table at the other end, you can hear the tapping louder than if you lift your head away from the table. Liquids-If you do any underwater swimming, you probably can tell that you can hear sounds in water. You can hear someone calling you from above the surface. You can also hear sounds in the water around you. Gases-When you hear sounds, what is usually around you? Air! You can hear sounds in air.