Earthquakes can occur ____.

How often do earthquakes occur?

Earthquakes are NOT related to the movement of tectonic plates.

Earthquake warning systems warn people _____.

Which type of seismic wave is faster?

Which type of seismic wave creates more ground shaking?

How many seismograph stations are needed to locate an earthquake epicenter?

An earthquake has just occurred. At Recording Station A, 45 seconds (Δt=45s) passes between the arrival of the P-wave and the S-wave. At Recording Station B, 100 seconds (Δt=100s) passes between the arrival of the P-wave and the S-wave. Which recording station is CLOSEST to the epicenter?

Which of the following methods for measuring earthquakes is considered outdated because it is only useful for small, shallow earthquakes.

Can scientists accurately predict earthquakes?