W 1-7 Vocab Flashcards
A unit of measure that indicates the relative intensity of a sound.
Decibel
Something that happens in a repeated and predictable way.
Pattern
A measurement of how much sound energy passes through a certain area in a certain amount of time as it spreads out from the source; measured in watts per square meter.
Sound Intensity
The region of the wave in which the material through which the wave is transmitted is pressed together.
Compression
The number of times an event repeats in a given time. For sound it is the number of vibrations per second.
Frequency
A purpose or function which a particular thing can perform.
Function
A unit of measurement for frequency. One hertz is equivalent to one cycle per second. The unit is named after the German physicist Heinrich _________ (1857-1894).
Hertz (Hz)
The redirection of a wave at the boundary between two transparent materials.
Rarefaction
The way something is formed, built, or organized.
Structure
A disturbance that repeats regularly in space and time and that transmits energy from one place to another with no transfer of matter.
Wave
The maximum displacement of a wave from its state of rest. For a mechanical wave, can be measured as a distance or a pressure.
Amplitude
The material in which wave energy travels. Mechanical waves, such as sound or seismic waves, move through the ground, water, air, and other materials.
Media/ Medium
A wave that transfers energy through compressions and rarefactions in the material through which the energy travels.
Longitudinal Wave
A form of energy that is transmitted through vibrations of a medium such as air, water, or solid materials and that can be heard.
Sound
The rate at which sound travels through a medium. The distance that the sound travels divided by the time of travel.
Speed of Sound
