Wave+interactions

Interference: interference is where two waves meet with one another, there a two types a) constructive interference: - occurs when the amplitude of two waves are added together to get one wave that is bigger then the two original amplitudes b) destructive interference: //- is where two waves amplitudes mix and the new amplitude is smaller then one of the original amplitudes//

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http://www.google.com.au/imgres?q=interference&um=1&hl=en&client=safari&rls=en&biw=1024&bih=706&tbm=isch&tbnid=QNRJ5EAyC-1D7M:&imgrefurl=http://en.wikipedia.org/wiki/Interference_(wave_propagation)&docid=Q36lHXyfbff2CM&w=200&h=200&ei=EERjTovtLuSJmQWy-_WhCg&zoom1//

//Reflection: Reflection is when an wave bounces off a substance at the same angle it came into an object//

http://www.google.com.au/imgres?imgurl=http://www.oocities.org/wave032002/Reflection-Water-Waves.gif&imgrefurl=http://www.oocities.org/wave032002/reflection.htm&h=279&w=529&sz=8&tbnid=mFZjJfKOroemeM:&tbnh=69&tbnw=131&prev=/search%3Fq%3Dreflection%2Bof%2Bwaves%26tbm%3Disch%26tbo%3Du&zoom=1&q=reflection+of+waves&docid=xgdJBQJmRYfJ4M&sa=X&ei=IXhkTu-5JqWZiAfp1IieCg&ved=0CD4Q9QEwBg&dur=54//

Rarefraction: Rarefaction takes place when light or sound is absorbed into an object. Instead of bending away from the normal like in reflection, it bends towards closer to the normal.

http://www.google.com.au/imgres?q=refraction+animation&um=1&hl=en&client=safari&sa=N&rls=en&biw=1214&bih=706&tbm=isch&tbnid=gDwIXSF57VBFSM:&imgrefurl=http://www.physics.ucdavis.edu/Classes/Physics9B_Animations/ReflRefr.html&docid=JfJqmqvKfY-YLM&w=350&h=350&ei=JHlkTtDvN8KImQWDoJyNCg&zoom=1

Diffraction: A term used to describe the situation where a wave spreads after a passing a gap or an obstacle http://www.google.com.au/imgres?q=interference+animation&um=1&hl=en&client=safari&rls=en&biw=1024&bih=706&tbm=isch&tbnid=ftpIEnL2VxQSKM:&imgrefurl=http://www.itp.uni-hannover.de/~zawischa/ITP/diffraction.html&docid=WO25-EsJFX--YM&w=256&h=192&ei=B0JjTorXIY75mAXX0PCiCg&zoom=1&iact=rc&dur=535&page=1&tbnh=130&tbnw=173&start=0&ndsp=17&ved=1t:429,r:4,s:0&tx=91&ty=40