There are generally two types of hay bales. With quite different weights. The most common ones that people buy at feed stores or the farmer, and can be moved by one person, are the type you may have bucked into the barn for your uncle who had a farm when you were a teenager. They are around 3-4 feet long by 24x18 inches square.
How Earthquakes Happen. An aerial view of the San Andreas fault in the Carrizo Plain, Central California. An earthquake is the vibration, sometimes violent, of the Earth's surface that follows a release of energy in the Earth's crust. This energy can be generated by a sudden dislocation of segments of the crust, by a volcanic eruption, or event by manmade explosions.
It was the largest earthquake to occur on the San Andreas fault since the great San Francisco earthquake in April 1906. The most severe property damage occurred in Oakland and San Francisco, about 100 kilometer north of the fault segment that slipped on the San Andreas.n the Santa Cruz Mountains in the forest of Nisene Marks State Park, about 16 kilometers northeast of Santa Cruz and about 7 kilometers south of Loma Prieta Mountains, California. This major earthquake caused 63 deaths, 3,757 injuries, and an estimated $6 billion in property damage.