Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
16 Sound (Ch. 16)
Sound (Ch. 16) - Prentice Hall Science Explorer
| Term | Definition |
|---|---|
| echo | a reflected sound wave |
| elasticity | __ is the ability of a material to bounce back after being disturbed (like a squeezed sponge returns to its original shape). |
| density | ___ is how much matter, or mass, there is in a given amount of space, or volume. |
| loudness | perception of the energy of a sound. Sound decreases by a change in distance squared. |
| intensity | The amount of energy a sound wave carries through a unit area is called its _____, which drops by an amount equal to the change in distance squared. |
| decibel (dB) | a unit of measure used to compare the loudness of different sounds. The decibels are too loud and the frequency hertz my ears. |
| pitch | The ____ of a sound you hear depends on the frequency of the waves you hear. It changes with moving objects. |
| ultrasound | sound waves with frequencies above 20,000 Hz. |
| infrasound | sound waves with frequecncies below 20 Hz |
| larynx | two folds of tissue that make up the human voice box. The vocal chords that vibrate to make a sound. |
| Doppler effect | the change in frequency of a wave as its source moves in relation to an observer Objects moving away from you have a slower lower frequency and object moving toward you have a higher faster frequency. |
| music | a set of tones and overtones combined in ways that are pleasing |
| fundamental tone | the lowest natural frequency of an object |
| overtone | a natural frequency that is a multiple of the fundamental tone's frequency |
| acoustics | the study of how sounds interact with each other and the environment |
| reverberation | the echoes of a sound that are heard after a sound source stops producing sound waves. |
| echolocation | the use of reflected sound waves to determine distances or to locate objects |
| sonar | a system that uses reflected sound waves to detect and locate objects underwater |
| sonogram | an image formed using reflected ultrasound waves |
| ultra | means above |
| infra | means below |
| basic properties | The ___ of waves are amplitude, wavelength, speed, and frequency. |
| compression | The part of a longitudinal wave where the medium is compacted or squeezed together. It is similar to the crest of a transverse wave. It is why longitudinal waves are also called ___ waves. |
| rarefraction | The parts of a looo o o ooongitudinal wave where the medium is stretched apart and is like the trough. |
| disturbance | The first vibration that sends energy making a wave. |
| energy | The greater the ____ used to make a sound, the louder the sound |
| hearing loss | There are many causes of ____ including infection, injury, exposure to loud noises, and old age. Old age is the primary one. |
| looo o o ooongitucinal | There are two types of mechanical waves.___ waves like sound move back and forth (not up and down) as the energy travels across. SOUND |
| MEchanical | ___ waves are produced when a source of energy causes a MEDIUM to vibrate. ME for MEdium and _____ |
| MEdium | The Material through which mechanical waves travel is called a ___. It contains matter. Think ME for ____ and MEchanical |
| move | When sound travels, the particles vibrate but do not ___. |
| noise | The interference of sound waves meeting that is unpleasant to hear. |
| reflection | When an wave hits a surface and some or all of the wave bounces back, the interaction with the surface is called ___ of the wave or echo. |
| shock wave | A __ forms as the sound waves overlap and a huge amount of energy is released as a sonic boom. |
| T.E.D. | Temperature, Elasticity, and Density stand for ____ and all affect the speed of sound waves. |
| wave | A _____ is a disturbance that transfers energy from place to place. Using vibrations. |
Created by:
aubiefan
Popular Physical Science sets