| A | B |
|---|
| The distance from the crest of one wave to the crest of the next wave is the ___. | wavelength |
| Waves are a transfer of ___. | energy |
| Waves are not a transfer of ___. | matter |
| The change of pitch caused by the motion of a sound source is called the ___ effect. | Doppler |
| Sound cannot travel through a ___. | vacuum |
| A sound with a high frequency will have a ___ wavelength. | small |
| Frequencies too high for the human ear to hear are ___. | ultrasonic |
| Frequencies too low for the human ear to hear are ___. | infrasonic |
| Sounds travel fastest through ___. | solids |
| A wave in which the particles vibrate at right angles to the direction of travel of the wave is a ___ wave. | transverse |
| Waves in which the particles of matter that the wave travels through vibrate in the same direction that the wave is traveling is a ___ wave. | compressional |
| The reflections of sounds in a large gymnasium are called ___. | echos |
| Frequency is measured in a unit called ___. | hertz |
| This can influence the speed of sound in air. | temperature |
| The low point of a wave is a ___. | trough |
| The study of sound is called ___. | acoustics |
| The number of waves that pass by a point each second is called the ___. | frequency |
| The matter through which a sound wave travels is called the ___. | medium |
| The height of the crest of a wave from its rest position is called the ___. | amplitude |
| The expansion of matter in a compressional is called a ___. | rarefaction |
| As a siren moves away from you the pitch becomes ___. | lower |
| The velocity of a wave is measured in ___. | meters per second |
| Wavelength is measured in ___. | meters |
| The intensity of a sound is measured in ___. | decibels |
| The speed of sound in air at 20 degrees Celsius is about ___. | 344 m/s |
| The ___ of a sound wave depends on the amount of energy in each wave. | intensity |
| The highness or lowness of a sound that you hear is the ___. | pitch |
| Noise pollution can cause ___ damage to a person's ability to hear. | permanent |
| Does sound travel faster through warmer air or cooler air? | warmer |
| Does sound travel faster through media that are more dense or less dense. | more dense |
| This part of your body vibrates when you speak. | vocal cords |
| Sounds are produced by ___. | vibrations |
| To solve for the velocity of a wave you must ___. | multiply frequency times wavelength |
| Hertz is a unit which is the number of ___. | Waves per second (or) waves/sec. |
| What is the velocity of a wave traveling with frequency of 225 Hz and having a wavelength of 3.0 meters? | 675 meters per second |
| Which type of wave does a slinky illustrate better, transverse or compressional? | compressional |
| A sound source that has no definite pitch is called ___. | noise |
| Will a change in frequency change the velocity of a sound? Yes or No | No |
