CONSTRUCTIVE INTERFERENCEthe interference that occurs when two waves combine to make a wave with a larger amplitudeCONVEX LENSa lens that is thicker in the middle than at the edges and bends light rays towards one anotherCONVEX MIRRORa mirror with a surface that curves outwardCORNEAthe transparent outer covering of the eyeCRESTthe highest point of a transverse waveDBA UNIT OF MEASUREMENT OF LOUDNESSDENSITYthe ratio of the mass of a substance to its volumeDESTRUCTIVE INTERFERENCEthe interference that occurs when two waves combine to make a wave with a smaller amplitudeDIFFRACTIONthe bending of waves around a barrier or through an openingDISSONANCEa harsh and disagreeable combination, often of soundsDOPPLER EFFECTThe apparent change in frequency of a sound as the source moves in relation to the listenerEAR CANALa narrow region leading from the outside of the human ear to the eardrumEAR DRUMa tightly stretched membrane at the end of the ear canal that vibrates when hit by sound wavesECHOLOCATIONthe process of using reflected sound waves to find objects; used by animals such as batsELASTICITYthe ability of a material to bounce back after being disturbedELECTROMAGNETIC SPECTRUMarrangement of electromagnetic waves according to their wavelengthsENERGYThe ability to do workFARSIGHTEDperson can see distant objects clearly, but nearby objects appear blurryFOCAL POINTthe point at which light rays meet when reflected or refractedFREQUENCYthe number of complete wavelengths that pass a point in a given timeGAMMA RAYelectromagnetic waves with the shortest wavelengths and the highest frequenciesHZHertz, measure of frequencyINFRARED RAYelectromagnetic waves with higher frequencies and shorter wavelengths than radio wavesINFRASOUNDsound waves with frequencies below 20 HzINTENSITYThe amount of energy per second carried through a unit area by a waveINTERFERENCEa wave interaction that occurs when two or more waves overlapIRISA ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening.LARYNXtwo folds of tissue that make up the human voice boxLENSa curved piece of glass or other material used to refract lightLONGITUDINAL WAVEA wave that moves the medium parallel to the direction in which the wave travelsLOUDNESSperception of the intensity of a soundMECHANICAL WAVEA wave that requires a medium through which to travel.MEDIUMMATERIAL THROUGH WHICH A WAVE TRAVELSMICROWAVERADIO WAVES WITH THE SHORTEST WAVELENGTHS AND THE HIGHEST FREQUENCIESMIDDLE EARTHE SPACE BEHIND THE EARDRUMMUSICA SET OF TONES AND OVERTONES COMBINED IN WAYS THAT ARE PLEASING TO THE EARNEARSIGHTEDCONDITION THAT CAUSES A PERSON TO SEE DISTANT OBJECTS AS BLURRYNODEA POINT OF ZERO AMPLITUDE ON A STANDING WAVENOISEA MIXTURE OF SOUND WAVES WITH NO PLEASING TIMBRE AND NO IDENTIFIABLE PITCHOPAQUEA MATERIAL THAT REFLECTS OR ABSORBS ALL LIGHT THAT STRIKES IT. - (YOU CANNOT SEE THROUGH SOMETHING THAT IS OPAQUE BECAUSE LIGHT CANNOT PASS THROUGH THEM)OPTIC NERVESHORT, THICK NERVE THAT CARRIES SIGNALS FROM THE EYE TO THE BRAINPITCHPERCEPTION OF THE FREQUENCY OF A SOUNDPRIMARY WAVEA LONGITUDINAL SEISMIC WAVE. ALSO CALLED P WAVE, THEY MOVE FASTER THAN OTHER SEISMIC WAVES AND SO REACH LONG DISTANCE POINTER QUICKER.PUPILTHE HOLE THROUGH WHICH LIGHT ENTERS THE EYE. (THE BLACK CENTER)RADARA SYSTEM OF DETECTING REFLECTED RADIO WAVESRADIO WAVEELECTROMAGNETIC WAVES WITH THE LONGEST WAVELENGTHS AND LOWEST FREQUENCIESRAREFACTIONTHE PART OF A LONGITUDINAL WAVE WHERE THE PARTICLES OF THE MEDIUM ARE FAR APARTRAYSTRAIGHT LINE USED TO REPRESENT A LIGHT WAVEREAL IMAGEAN INVERTED IMAGE FORMED WHERE RAYS OF LIGHT MEETREFLECTIONTHE BOUNCING BACK OF A WAVE WHEN IT HITS A SURFACE THROUGH WHICH IT CANNOT PASSREFRACTIONTHE BENDING OF WAVES AS THEY ENTER A DIFFERENT MEDIUMRESONANCETHE INCREASE IN THE AMPLITUDE OF A VIBRATION THAT OCCURS WHEN EXTERNAL VIBRATIONS MATCH THE OBJECT'S NATURAL FREQUENCYRETINATHE LAYER OF CELLS THAT LINES THE INSIDE OF THE EYEBALLSECONDARY WAVEA TRANSVERSE SEISMIC WAVE, OR S WAVE. CANNOT TRAVEL THROUGH LIQUIDSSEISMIC WAVEA WAVE PRODUCED BY AN EARTHQUAKE. CAUSED BY STRESS IN THE ROCK BUILDING UP AND THE ROCK BREAKS OR CHANGES SHAPE, RELEASING ENERGY IN THE FORM OF WAVES OR VIBRATIONS. SEISMIC WAVES INCLUDE PRIMARY WAVES, SECONDARY WAVES AND SURFACE WAVESSEISMOGRAPHINSTRUMENT USED TO DETECT AND MEASURE EARTHQUAKESSONARA SYSTEM OF DETECTING REFLECTED SOUND WAVESSONOGRAMAN IMAGE FORMED BY AN ULTRASOUND MACHINESTANDING WAVEA WAVE THAT APPEARS TO STAND IN ONE PLACE, EVEN THOUGH IT IS REALLY TWO WAVES INTERFERING AS THEY PASS THROUGH EACH OTHER.SURFACE WAVEA WAVE THAT OCCURS AT THE SURFACE BETWEEN TWO MEDIUMSTIMBRETHE OVERALL QUALITY OF A SOUNDTRANSLUCENTA MATERIAL THAT SCATTERS LIGHT AS IT PASSES THROUGH. (LIKE FROSTED GLASS OR WAX PAPER - YOU CAN SEE SOMETHING IS ON THE OTHER SIDE, BUT NOT CLEARLY)TRANSPARENTA MATERIAL THAT TRANSMITS LIGHT. THE LIGHT PASSES RIGHT THROUGH, SHOWING CLEARLY WHAT IS ON THE OTHER SIDE (GLASS)TRANSVERSE WAVEA WAVE THAT MOVES THE MEDIUM IN A DIRECTION PERPENDICULAR TO THE DIRECTION IN WHICH THE WAVE TRAVELS. (TRANSVERSE MEANS ACROSS) (PG 16)TROUGHTHE LOWEST PART OF A TRANSVERSE WAVEULTRASOUNDSOUND WAVES WITH FREQUENCIES ABOVE 20,000 HzULTRAVIOLET RAYELECTROMAGNETIC WAVES WITH FREQUENCIES HIGHER THAN VISIBLE LIGHT, BUT LOWER THAN X-RAYS.VIBRATIONA REPEATED BACK-AND-FORTH OR UP-AND-DOWN MOTIONVIRTUAL IMAGEAN UPRIGHT IMAGE FORMED WHERE RAYS OF LIGHT APPEAR TO MEET OR COME FROMVISIBLE LIGHTELECTROMAGNETIC WAVES THAT ARE VISIBLE TO THE HUMAN EYEWAVEA DISTURBANCE THAT TRANSFERS ENERGY FROM PLACE TO PLACEWAVELENGTHTHE DISTANCE BETWEEN TWO CORRESPONDING PARTS OF A WAVE (LIKE FROM TROUGH TO THE NEXT TROUGH)X-RAYELECTROMAGNETIC WAVES WITH HIGHER FREQUENCIES THAN ULTRAVIOLET RAYS, BUT SHORTER THAN GAMMA RAYS
