EARTHQUaKE

WHAT DO YOU THINK OF WHEN YOU HEAR THE WORD EARTHQUAKE

• WHEN I THINK OF EARTHQUAKES, THE WORD JAPAN COMES TO MY MIND
• BECAUSE OF ALL THE EARTHQUAKES THEY HACE EXPERIENCED

WHAT IS AN EARTHQUAKE?

• a series of vibrations induced in the earth's crust
• by the abrupt rupture and rebound of rocks
• in which elastic strain has been slowly accumulating.

WHERE DO THEY OCCUR?

• Alaska
• California
• Hawaii
• Nevada
• Washington

HOW OFTEN DO EARTHQUAKES OCCUR?

• Magnitude 2 and smaller occur several hundred times a day world wide
• magnitude greater than 7, happen more than once per month
• magnitude 8 and higher, occur about once a year

WHY DO EARTHQUAKES OCCUR?

WHAT WAS THE LARGEST RECORDED EARTHQUAKE?

• "The Great Chilean Earthquake"
• Occurred on May 22,1960 in Valdivia, Chile
• magnitude of 9.5

How do earthquakes affect the economy?

• buildings being destroyed
• The coast to fix the damage
• people being hurt/killed

precautions taken to protect THE people

• if you are indoors get under a desk or table.
• Hold on to one of the legs and cover your eyes.
• Wait in your safe place until the shaking stops
• Stay away from things that could fall over on top of you

WHAT DO THEY USE TO MONITOR EARTHQUAKES?