Although the faults under the Anza Valley have been quiet lately, it’s always a good time to be prepared for the next significant tremblor.The crust of the earth is made of many pieces called tectonic plates. Each of these sections is moving slowly, floating on the hot mantle inside the planet. As they bump and grind past each other, people feel this action as earthquakes.According to the United States Geological Survey, “An earthquake is what happens when two blocks of the earth suddenly slip past one another. The surface where they slip is called the fault or fault plane. The location below the earth's surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter.”Earthquakes can stri
