On April 18, 1906, an earthquake struck near San Francisco, California, then the largest city on the West Coast. The earthquake occurred offshore, at an outcropping called Mussel Rock, at little after 5:00 a.m. Tremors were felt from Oregon to Los Angeles, and inland toward Nevada. The exact magnitude of the earthquake is disputed, but the most common estimate is about 7.9—a very damaging temblor.Fires immediately broke out in San Francisco due to broken gas lines, fallen power lines, and lanterns that had toppled over during the earthquake. Water lines were ruptured as well, which made it difficult to put the fires out. It is estimated that 3,000 people were killed during the earthquake and its aftershocks, which lasted for days. The earthquake displaced even more people from their homes.The earthquake occurred as a result of a shift along the San Andreas Fault, which bisects the San Francisco Peninsula just to the west of the city. The land on the eastern side of the fault, including the city and San Francisco Bay, moved southward, while the land on the western side was pushed northward. More than 6 meters (20 feet) of displacement occurred during the quake.
Term Part of Speech Definition Encyclopedic Entry bay Noun
body of water partially surrounded by land, usually with a wide mouth to a larger body of water.
Encyclopedic Entry: bay bisect Verb
to cut in half or divide equally in two.
large settlement with a high population density.
to remove or force to evacuate.
forced removal of something, often people or organisms, from their communities or original space.
debate or argument.
the sudden shaking of Earth's crust caused by the release of energy along fault lines or from volcanic activity.
to guess based on knowledge of the situation or object.
a crack in the Earth's crust where there has been movement.
state of matter with no fixed shape that will fill any container uniformly. Gas molecules are in constant, random motion.
at once or quickly.
intensity of an earthquake, represented by numbers on a scale.
having to do with facilities or resources located underwater, usually miles from the coast.
layer of rock visible above the surface of the Earth.
piece of land jutting into a body of water.
Encyclopedic Entry: peninsula rupture Verb
to break or tear.
West Coast Noun
Pacific coast of the United States, usually excluding Alaska.