I.                  Periodic Wave Phenomena handout

 

A.                Interference – effect produced by two waves passing simultaneously through a region                                                        

 

1.                Superposition – when waves ______________________, the resultant displacement is the algebraic sum of the individual displacements of each wave

 

a.               _______________________ Interference

 

 

                                              

            1.                                         

 

                                                                   

                                                                               

        2.

 

 

 

        3.

 

 

b.               ______________ Interference

 

 

          1.                                                                         1800 out of phase                                                                                      

       

 

          2.      At the moment they overlap the wave amplitude _____________

 

 

3.  _________________________________

 

 

 

 

 

 

 

2.                __________________________ Line of Interference

 

wave patterns produced by the _________________ of 2 wavefronts in phase

 

      ¬crest               x – destructive

                                                                             o – constructive

 

 

 

 

 

Maximum ________________ Interference - Phase Difference __________

 

B) Standing Wave – waves produced when two waves of the __________

 

and amplitude travels in __________________________in the same medium (Musical instruments)

 

                      __________________

                                       

                                               

 

 

                                                  Same _______________

       

        ________                           Same _______________

 

Standing waves can also be produced by _______________ (guitar string)

 
 

 

 

 

 

 

 

 


How many nodes?  ____

 

How many antinodes? ____

 

How many waves?_______

 

 

 

 

 

 

 

 

 

C) Resonance – The building up of energy by adding small amounts of

 

energy in time with the ___________________ frequency of an object

 

Resonance Frequency – _____________________________that an object vibrates when disturbed

 

D)   Diffraction – the ________________________________________ into the region behind an obstacle

 
Amount of diffraction depends on __________________ and ________________

                                       

Wave / Slit  / Diffraction

 

 

 

 

 

 

Large differences between __________________ and _________________ causes greater diffraction