|A seawall (or sea wall) is a form of coastal defense constructed where the sea,
and associated coastal processes, impact directly upon the landforms of the
coast. The purpose of a sea wall is to pro. Mar 11, 2011 . A diagram showing how a tsunami works.The term tsunami from the Japanese and means - Big wave in the port. The term
was coined by fishermen who returned to their ports in the evening after their . This is a NOAA video that shows an animation of a tsunami strike in 2009. Tell
your students. .. Label letters A and B on the wave diagram (2pt). A: wavelength
. A secondary school revision resource for GCSE Geography, defining tsunamis
and describing their impact - includes a case study on the Boxing Day Tsunami . Tsunamis are caused by an underwater earthquake, a volcanic eruption, an sub-
marine rockslide, or, more rarely,. Most tsunamis are caused by underwater
earthquakes, but not all underwater earthquakes cause. . Biology Label
Printouts_characteristics.pdf has diagram of tsunami wave size from deep water to the. .
coastline: draw a line to show how far the water has receded; colour and label.The tsunami that hit Samoa, American Samoa, and Tonga on September 29,
2009, was. Schematic diagram of a subduction zone, showing location of the
outer rise and. Islands labeled "Samoa" include Samoa and American Samoa.Tsunamis. Written for the TEENsKnowIt Network by: Meredith Tennant. The name '
tsunami' is Japanese. It means harbor wave. Tsunamis used to be called tidal . Check out these epic tsunami facts from National Geographic TEENs! How do
tsunamis form? And how big are they? Find out all about them in our tsunami