# Shared Flashcard Set

## Details

Waves Vocab
n/a
74
Physics
05/22/2012

Term
 Wave
Definition
 A disturbance that propagates through a medium or space
Term
 Disturbance
Definition
 changes in position with respect to time
Term
 medium
Definition
 waves can move over large distances but the medium(rope or water) itself has only a limited movement
Term
 Waves
Definition
 are not matter, however the wave can travel in matter-can carry energy from one place to another
Term
 Pulse Wave
Definition
 a wave that consists of a few disturbances
Term
 Periodic Wave or Continous Wave
Definition
 the motions are repeated at regular intervals
Term
 Simple Harmonic Motion
Definition
 motion in which the accelerations proportional to the displacement from an equilibrium position and is directed toward that position
Term
 wavelength
Definition
 the distance between any two successive identical points on a wave
Term
 frequency
Definition
 is the number of complete cycles per unit of time
Term
 period
Definition
 is the time for one complete cycle units
Term
 amplitude
Definition
 is the maximum displacement of a wave as measured from its equilibrium or undisturbed position
Term
 transverse wave
Definition
 a wave in which the vibrations are at right angles to the direction of propagation
Term
 longitudinal wave
Definition
 a wave in which the vibration are parallel to the direction of propagation of the wave
Term
 rectlinear propagation
Definition
 the propagation of the advancing straight wave is perpendicular to the wave front
Term
 circular propagation
Definition
 the propagation of the advancing circular wave life along radial lines away from the center of disturbance
Term
 incidence
Definition
 an approaching wave
Term
 reflection
Definition
 the return of a wave from the boundary of a medium
Term
 angle of incidence
Definition
 the angle between the incident ray and the normal drawn to the point of incidence
Term
 angle of reflection
Definition
 the angle between the reflected ray and the normal drawn to the point of incidence
Term
 ray
Definition
 a line drawn in the direction perpendicular to the wavefront
Term
 wavefront
Definition
 the portions of the medium surface in which particles are in the same motion
Term
 refraction
Definition
 the bending of wave disturbances as it passes obliquely from one medium into another
Term
 diffraction
Definition
 the spreading of a wave disturbance into a region behind an obstruction
Term
 intensity
Definition
 the power transferred across a unit area perpendicular to the direction of energy flow
Term
 damping
Definition
 the reduction in the amplitude of a wave due to the dissipation of wave energy
Term
 wave crest
Definition
 the top part of a wave
Term
 wave through
Definition
 the bottom part of a wave
Term
 sound
Definition
 the series of disturbances in better to which the human ear is sensitive. Also, similar disturbances in matter above and below the normal range of human hearing
Term
 audio range
Definition
 the audio range of frequencies
Term
 ultrasonic
Definition
 vibrations in matter above 20,000
Term
 infrasonic
Definition
 vibrations in matter below 20
Term
 sonic spectrum
Definition
 the frequency range of sound
Term
 superposition
Definition
 combining the displacements of two or more vectorially to produce a resultant displacement
Term
 standing wave
Definition
 the resultant of two wave trains of the same wavelength, frequency and amplitude
Term
 interference
Definition
 refers to what happens when tow waves pass through the same region of space at the same time
Term
 constructive interference
Definition
 when two standing waves approach each other on the same side of the equilibrium line
Term
 destructive interference
Definition
 when two standing waves approach each other on the opposite side of the equilibrium line
Term
 beat
Definition
 the interference effect resulting from the superposition of two waves of slightly different frequencies
Term
 node
Definition
 a point of no disturbance in a standing wave
Term
 loop
Definition
 a midpoint of a vibrating segment of a standing wave
Term
 resonance
Definition
 the inducing of vibrations of a natural rate by a vibrating source
Term
 fundamental
Definition
 the lowest frequency of sound produced by an instrument
Term
 harmonics
Definition
 the fundamental and the tones frequencies are whole number multiples of the fundamentals
Term
 rarefaction
Definition
 the region of a longitudinal wave in the vibrating particles are farther apart than their equilibrium distance
Term
 compression
Definition
 the region of a longitudinal wave in which the distance separating the vibrating particles is less than their equilibrium distance
Term
 refraction
Definition
 the bending of a wave disturbance as it passes obliquely from one medium into another, in which the disturbance has a different velocity
Term
 angle of refraction
Definition
 the angle between the refracted ray and the normal drawn to the point of refraction
Term
 pitch
Definition
 is the characteristic of sound that depends on the frequency that the EATR recieves
Term
 loudness
Definition
 the sensation that depends principally on the intensity of sound waves reaching the ear
Term
 quality
Definition
 the property of sounds waves that depends on the number of harmonics and the prominence
Term
 law of reflection
Definition
 when a wave disturbance is reflected at the boundary of a transmitted medium, the angle of indigence is equal to the angle of reflection
Term
 doppler effect
Definition
 the change observed in the frequency with which a wave from a given source reaches an observer when eh source and the observer are in relative motion
Term
 production of sound
Definition
 compression waves propagate as longitudinal distances
Term
 production of sound
Definition
 the disturbances consist of compression and rarefaction
Term
 production of sound
Definition
 these disturbances give rise to elastic forces
Term
 production of sound
Definition
 the particles of the medium acquire energy from the vibrating source
Term
 production of sound
Definition
 the wave energy is passed along to adjacent particles
Term
 thermodynamics
Definition
 the study of quantitative relationships between heat ad over forms of energy
Term
 system
Definition
 is that part of the entire universe which we have selected for consideration
Term
 surrounding
Definition
 everything else in the universe
Term
 state function
Definition
 variables used to define the conditions of the system
Term
 open system
Definition
 mass may enter or leave
Term
 closed system
Definition
 no mass may enter or leave
Term
 isolated system
Definition
 if no energy passes across the boundaries
Term
 nonisolated system
Definition
 if energy does pass across the boundariesexothermic, endothermic
Term
 exothermic
Definition
 energy flows out of the system
Term
 endothermic
Definition
 energy flows into the system
Term
 internal energy
Definition
 is the total potential and kinetic energy of the particles of a substance
Term
 enthalpy
Definition
 the internal energy and any energy due to the expansion possibilities of the system
Term
 entropy
Definition
 the property that describes the disorder of a system
Term
 zeroth law of thermodynamics
Definition
 two systems individually in thermal equilibrium with a third system are in thermal equilibrium
Term
 first law of thermodynamics
Definition
 the quantity of energy supplied to any system in the form of Q= W+ CHANGE IN E
Term
 Second law of thermodynamics
Definition
 heat flows naturally from a hot object to a cold object
Term
 third law of thermodynamics
Definition
 it is not possible to lower the temp of any system to absolute zero
Supporting users have an ad free experience!