Question: What divides the Pacific and North American tectonic plates?
San Andreas Fault
California is known for earthquakes, a result of the state’s 500 active faults. The 800-mile-long San Andreas Fault, separating the Pacific and North American tectonic plates, is the state’s longest. However, it may not be the most dangerous. The Hayward Fault, an offshoot of the San Andreas Fault, cuts through the highly populated areas of Oakland, Fremont, and Berkeley, near San Francisco.
The Answer: The correct answer is San Andreas Fault.