You are sitting at the kitchen table diligently doing your homework when you hear your younger siblings yelling and fighting over a toy in the living room around the corner. The sound waves are undergoing ___ as they travel from your siblings' mouths around the corner, down the hall, into the kitchen, into your ear. Which term completes the sentence? a. diffraction b. reflection c. refraction d. interference

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Shock Waves

Shock waves are common in continuum mechanics, and their dominance is attributable to the fact that they are stronger (or even less) compressible. Substantial perturbations propagated as sudden dynamic changes of a compressible medium supersonically. Shock waves are all around us in our daily lives. Lightning, earthquakes, volcanic eruptions, and meteorite impact all produce them in nature. Even the earth, which is protected by its magnetic field, generates a shock wave as in solar wind that travels around 20 Earth radiuses. These shock waves might be either constant, linked to the body, or unsteady, i.e., moving around with time. All of the shocks mentioned above can be damaging, so precautions must be taken to reduce their impact.