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		| A.
		 Waves and Energy | 
		  |  1. Waves transfer ENERGY from one place to 
another with no transfer of mass   2. Waves can be produced in two ways: 
  a. Vibration of particles 
 (requires a medium for transfer) (mechanical wave)    
			 SoundF_WL_Amp.mp4 Sound Waves 
And Their Sources This movie is part of the collection: Prelinger Archives
 Production Company: ERPI Classroom Films, Inc. Distributed by Encyclopedia 
Britannica
 Audio/Visual: sound, B&W
 Creative Commons license: Public Domain
   
  ex) sound, water wave, spring wave       
 
Splash of 
	a Water Drop N. Carolina School of Science and Mathematics
 
       
   b. Small changes in 
the strength of an electromagnetic field 
 (requires no medium for transfer)    ex) light, microwaves, x-rays     
      3d  
Electromagnetic Wave 
	# 1David M. Harrison
 3d  
Electromagnetic Wave 
	# 2David M. Harrison
   
     
			 
 Radiology Centennial, Inc copyrighted in 1993
 
   
  
 How the human ear 
	works - Biswajeet - India Onsite  
	Version   
   
  
	 
 
 
			  
			  
			  
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