In these earthquake activities you will create subduction zone earthquake blocks showing how great earthquakes are generated by the movement of an ocean plate moving beneath another plate.
Ninety percent of great earthquakes and tsunamis occur in the Pacific Ocean in subduction zones. These earthquake activities show how the plates can lock and pressure builds until a great earthquakes occurs sending tsunami waves to distant shores.
There are many fun science activities in this book that show how earthquakes can cause the land to shake, rattle, and roll beneath our feet. Myrna Martin
Megathrust earthquakes that occur in subduction zones can be hundreds of kilometers long. The ocean floor often slips downward and sideways during one of these events.
On December 26, 2004 a megathrust earthquake occurred when the rocks broke along a fault line in the Indian Ocean approximately 1600 km long. The entire length of the break and the seafloor lifted several feet creating tsunami waves and vibrations recorded around the entire Earth by seismographs for an entire week after the event.
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