Question | Answer |
echo | a reflected sound wave |
elasticity | the ability of a material to bounce back after it is disturbed |
dencity | the ratio of mass to volume |
loudness | perception of energy of a sound |
intencity | the amount of energy carried through a substance per second |
decibel | a unit of how loud a sound is |
pitch | perception of the frequency of a sound |
ultrasound | sound wave with the frequency over 20,000Hz |
infrasound | sound with frequencies lower then the human hearing range |
larynx | 2 folds of tissue that make up the voice box |
Doppler effect | the change in frequency of a wave as its source moves in relation to an observer |
what causes the Doppler effect | when a sound source moves, the frequency of the wave changes because of the motion of the source adds to the motion of the waves |
what causes a sonic boom | when an object breaks the sound barrier |
fundamental tone | the lowest natural frequency of an objoct |
overtone | the natural frequency that is multiple of the fundamental tone's frequency |
acuostics | the study of how sound interacts with its surroundings |
reverbration | the echoes of a sound that are heard after it stops producing sound waves |
ear canal | the narrow part of the ear leading to the ear drum from the outside of the ear |
eardrum | a small, tightly stretched, drumlike membrane in the ear |
cochlea | a fluid filled cavity in the inner ear that is shaped like a snail shell |
echolocation | the use of reflected sound waves to determine distance or to locate |
sonar | |
sonogram | |