SHAKE, RATTLE, AND ROLL

WHEN YOU THINK OF EARTHQUAKES, WHAT COMES TO MIND?

• I imagine a lot of destruction because of the ground shaking.
• I picture buildings in pieces and everything destroyed.
• I think of people scared when it is happening.
• I think of people being upset because of the results of the earthquake.

WHAT IS AN EARTHQUAKE?

• An earthquake is a sudden and violent shaking of the ground caused by sudden movement of rock.

WHERE DO EARTHQUAKES OCCUR?

• Earthquakes occur along plate edges and along faults.
• They also occur along continental plates.

WHY DO EARTHQUAKES OCCUR?

• Earthquakes occur when rocks break along a fault and the release of energy is what causes the ground to shake.

WHAT IS THE DEVASTATION LIKE?

• Earthquakes ruin entire cities in minutes.
• They put many lives in danger.
• After earthquakes occur tsunamis may often occur latter.
• Earthquakes disrupt the countries aid operations which makes it difficult to help people.

HOW OFTEN DO EARTHQUAKES OCCUR?

• Earthquakes with a magnitude 2 or smaller occur several hundred times a day.
• Earthquakes with a magnitude 7 or higher occur about once a month.
• Earthquakes with a magnitude 8 and higher occur about once a year.

WHAT WAS THE LARGEST RECORDED EARTHQUAKE?

• The Great Chilean Earthquake or the 1960 Valdivia Earthquake was the largest earthquake.
• It occurred on May 22, 1960 near Valdivia, in Southern Chile.
• It had a magnitued of 9.5.

WHAT PRECAUTIONS ARE TAKEN TO PROTECT PEOPLE FROM EARTHQUAKES?

• If you are indoors during an earthquake you drop, cover, and hold on.
• You should get under a desk, table, or bench and hold on to the legs.
• Do not run outside durin an earthquake because materials from buldings may fall on you.
• If you happen to be outside when it occurs, stay outside and move away from anything that could fall on you.
• During an earthquake you should have a flashlight, disaster supplies kit, and evacuation supplies kit.

HOW ARE EARTHQUAKES MEASURED?

• Earthquakes are measured using the Richter Scale.
• It is the amplitude of the seismic waves.
• The moment magnitude of an earthquake is a measure of the amount of energy released.

HOW DO EARTHQUAKES AFFECT THE ECONOMY?

• They affect the economy because it costs a lot of momey to fix the destruction.
• They affect peoples lives and familes.
• They can destroy businesses and jobs so many people cannot sell their products.
• They destroy homes and hospitals so there is little help to the people hurt.
• Earthquakes are a horrible natural disaster.