1. Wave Basics

2. Wave Definition  Any traveling disturbance that transfers energy. WAVES DON’T MOVE MATTER!!! http://www1.moe.edu.sg/learn@/Quest/winners/secondary/raffles_girls_sch_nc/Folders/Frames/Images/wave.jpg

3. Crest  Peak or high point of a wave CREST

4. Trough  The low point of a wave TROUGH

5. Equilibrium  Resting point : Point of no disturbance…point in between the crest and trough EQUILIBRIUM

6. Amplitude  Point of maximum displacement from the resting point (Equilibrium)  This measures the Energy of a wave AMPLITUDE

7. Wavelength (λ)  Distance or length of one full wave cycle (trough to trough or crest to crest)  It should be the same distance for each wavelength WAVELENGTH

8. Wave Frequency  How often a full wave cycle occurs, or the amount of time it takes for one full wave cycle to occur.  Frequency is measured in Hertz (Hz)  Frequency also measures the pitch of a wave http://www.davidjarvis.ca/dave/gallery/lg/sine-wave-frequency.jpg

9. Medium  The substance or “stuff” the wave travels through  For Example -Water -Air  There are no mediums in space!  This basically means NO SOUND!!  Light CAN travel without a medium. http://odin.physastro.mnsu.edu/%7Eeskridge/astr101/Surface_waves.jpg

10. Electromagnetic Radiation Waves  These come from the sun… -Radio Waves -Microwaves -Infrared (Heat waves) -Visible Light -UV Rays -X-Rays -Gamma Rays http://www.bxscience.edu/ourpages/users/Villani/bionic/2000/Pics/x%20rays.jpg

11. Sound Waves  Cannot travel in space!  Change in amplitude=volume  Change in Wavelength=pitch http://www.brobproductions.com/bigstockphoto_Sound_Waves_1345039.jpg

12. Two Types of Waves  Transverse Waves --These waves go side to side  LIGHT!!!  Longitudinal Waves --These waves push and pull  SOUND!!! http://www.dkimages.com/discover/previews/857/35069553.JPGhttp://www.glenbrook.k12.il.us/GBSSCI/PHYS/MMEDIA/waves/tfl.gif

13. Electro-magnetic Waves vs. Mechanical Waves (WAVE FORMS)  Electro-magnetic  Is able to transmit energy through a vacuum  Does not need a medium  Travels faster with no medium  Mechanical  Can’t transmit energy through a vacuum  Need a medium