Hot liquid rock under the earths surface is known as magma,it is called lava after it out of a volcano.
The word volcano originally comes from the name of Roman god of fire.
Volcanos are usually located where tectonic plates meet.
form near tectonic boundaries they can also form in areas that contain abnorm hot rock inside the earth
hot liquid rock under eartear hs surface is known as magma it is called lava after it comes out of a volcano.
the largest earthquake in the united states was a magni tude 9.2 that struck prince william sound alaska on good friday march 28) 1964 utc.
the largest earthquake in the world was a magnitude 9.5(Mw)in chile on may 22,1960
The earliest reported earthquake in California was felt in 1769 bythe exploring expedition of Gaspar de Portola while the group was camping about 48 kilometers(30 miles)southeast of Los Angeles.
The average rate of motion arcoss the san andreas fault zone during the past 3 million years is 56 mm(yr(2 in\yr).