Earthquakes

• magnitude


  "size of an earthquake" / energy released
• magnitude


  measured using the Richter scale (1-10)
• Richter Scale


  (1-10) magnitude 2 is 10x stronger than 1
• Moment Magnitude Scale


  now more commonly used because of higher precision
• intensity

  amount of damage
• intensity


  measured using the Mercalli Scale (1-12)
• focus


  an earthquake's point of origin
• epicenter


  the point on the earth's surface directly above the focus