| A | B |
|---|
| Sound | When matter vibrates and travels as a longitudinal wave |
| Temperature, Density, and Elasticity | Three factors which effect speed of sound |
| As the temperature increases, | speed of sound increases |
| As density increases, | speed of sound decreases |
| As elasticity increases, | speed of sound increases |
| Pitch | The high or low of a sound |
| As frequency increases, | pitch increases (gets higher) |
| Ultrasonic | Sound with frequencies above 20,000 Hz. |
| Infrasonic | Sound with frequencies below 20 Hz |
| Intensity | Amount of energy carred by a wave in a certain amount of time |
| Intensity | determines loudness of a sound |
| As intensity or amplitude increases, | volume increases (gets louder) |
| If you decrease the length of a string, | the pitch increases (gets higher) |
| If you increase the length of the tube the air vibrates in, | the pitch decreases (gets lower) |
| If you increase the amount of water in the glass, | the pitch decreases (gets lower) |
| As the tension on the balloon or string increases, | the pitch increases (gets higher) |
| Volume | The loudness or softness of a sound |
| Sound waves travel as | longitudinal Waves |
| Sound waves are mechanical because | they need to travel through a medium |
| Sound travels fastest in a | Solid |
| Sound travels slowest in a | Gas |
| Hertz | Unit of measurement for frequency |
| Decibel | Unit of measurement for volume |
| Doppler Effect | Change in pitch caused when there is a motion between the source and the reciever of the sound. |
