1) The Causes of the Christchurch Earthquake

What are the Causes of Earthquake & Its Impact on Earth - Earth Reminder

Causes of Earthquakes | Explanation & Location

4.8 magnitude earthquake near New York City shakes the Northeast

Earthquakes in the United States

Earthquake Survival Tips: Think You're Safe? Think Again | Survival Life

Earthquake Survival Tips: Know What You Need To Do During An Earthquake And After Tremours Subside