| Question |
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| Answer |
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| sound |
passage of disturbance through the air or another medium. vibratory energy transmitted by pressure waves in the air or other media. has potential to do work, does not pass though a vacuum. |
| wave |
disturbance of a medium. particles are temporarily dispalced and then resutrn to their original position. |
| longitudinal waves |
particles of the medium are displaced in a direction parallel to energy transport (tuning fork)(sound) |
| transverse waves |
particles of the medium are displaced in a direction perpendicular to the direction of energy transport. |
| eleasticity |
restoring force. ability of an object to return to its initial position. |
| intertia |
tendency of a body to remain in motion when in motion and to remain at rest when at rest. |
| vibration |
movement of an object from one point in space to another point and back again to the first point. |
| damping |
effect on an objec that reduces the amplitude of oscillation of an object causing the object to come to a stop. |
| sinusoidal motion |
vibration of pendulum is aperiodic. |
| simple harmonic motion |
periodic. repeats itself at standard intervals in a specific manner. charcterized by amplitude, period, frequency, phase. |
| amplitude |
how big the motion is. (measured in dB |
| period |
how long it takes time it takes to complete one cycle. properties of sine wave |
| frequency |
number of cycles per unit. measures in hertz properties of sine wave |
| phase |
determines the starting point on the sine wave. defined in degrees of angle 0-360 |
| wavelength |
distance that a sound wave disturbance travels during one complete cycle. |
| velocity |
speed of sound. describes how much the wave travels in a certain amount of time |
| intantenous amplitude |
dispalcement of a sine wave varies with time. |
| peak to peak amplitude |
from maximum positive peak to the maximum negative peak. |
| root mean square amplitude |
square root of the average amplitude squared, . 7 time the peak amplitude. |
Buen Viaje lv.2 ch 8
