For Waves
Waves are everywhere. Most of the information that we receive comes to us in the form of waves. You rely on waves to bring you music and TV. You can cook with waves, talk to others and see things all because of waves. Waves transfer energy in different forms, some are very useful, while others can be deadly.
A Tsunamis or tidal wave is a very large water wave that has been produced by some kind of seismic phenomona. These waves can move at speeds of 500 km/h and have a period of 60 minutes. They can move across the ocean very quickly and cause incrediable damage to coastal regions.
Animals use wave motion to propel themselves through there surroundings. Eels and snakes use transverse body waves to push against the water or ground to help them move. Earth worms however, use longitudinal waves for propulsion. Others, like certain one-celled animals use flagella in a whiplike wave motion to move about their world.
Shock waves created out by a lighting may cause a sonic boom. Sonic booms can also be produced by aircraft flying at speeds greater than the speed of sound in air. Because of this the Concord aircraft has been banned from flying over inland portions of the United States.
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