Physical Science Sound and Waves Introduction. Mechanical Wave Mechanical waves require a medium Examples: shaking a rope or string, ocean tides, slinky.
Exit Choose to view chapter section with a click on the section heading. ►The Nature of WavesThe Nature of Waves ►TidesTides Chapter Topic Menu.
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Refraction Lesson 4. Objective You will be able to qualitatively and quantitatively describe the behavior of waves as the pass from one medium to another.
