The largest recorded earthquake in the world was a magnitude 9.5 (Mw) in __________ on May 22, 1960.

The average rate of motion across the San Andreas Fault Zone during the past 3 million years is 56 mm/yr (2 in/yr). This is about the same rate at which your fingernails grow.

Moonquakes (“earthquakes” on the moon) do occur, but they happen more frequently and have larger magnitudes than earthquakes on the Earth.

It is estimated that there are 500,000 detectable earthquakes in the world each year.

Each year the southern California area has about 10,000 earthquakes.

More earthquakes occur during certain types of weather, called "earthquake weather".

The swimming pool at the University of Arizona in Tucson lost water from sloshing caused by the 1985 M8.1 Michoacan, Mexico earthquake 2000 km (1240 miles) away.

_______ and _________ have the smallest number of earthquakes in the United States.