Waves & Sound Glossary Terms Chapter 8

-the cyclical motion of an object about an equilibrium point

-the transfer of energy through a material due to vibration

-the material that permits the transmission of energy through vibrations

-the straight-line motion of a molecule; this motion is typical of gasses because the particles in liquids and solids are not free to move in this manner

-a wave in which particles vibrate perpendicular to the direction of the flow of energy

-the region in a longitudinal wave in which the medium's particles are closer together

-the region in a longitudinal wave in which the medium's particles are farther apart

-a form of energy produced by rapidly vibrating objects detectable by sensory organs such as the ear

-the maximum displacement of a wave from its equilibrium point

-the shape of a wave when graphed

-the maximum point of a transverse wave

-the minimum point of a transverse wave

-the distance between two similar points in successive identical cycles in a wave, such as from crest to crest or trough to trough

-in a continuous transverse or longitudinal wave, the x-coordinate of a unique point of the wave

-a shift of an entire wave along the x-axis with respect to an otherwise identical wave

-the state of two identical waves that have the same phase shift

-the state of two identical waves that have different phase shifts

-the number of complete cycles that occur in unit time, usually 1 s; measured in hertz (Hz)

-the time for a vibrating particle to complete one cycle

-the rate at which a wave is travelling through a medium; also a measure of how fast the energy in the wave is moving

-any motion that repeats itself at regular intervals

v=fλ

-sound wave in the range of human hearing, 20 Hz to 20kHz

-sound wave with a frequency below 20 Hz

-sound wave with a frequency above 20kHz

-the sound energy reflected off a surface back to the producer of the sound

v=331.4m/s + (0.606m/s/°C)T

-the ratio of the airspeed of an object to the local speed of sound

-the force per unit area

-the amount of sound energy being transferred per unit area; unit W/m²

-the unit of sound level used to describe sound intensity level