Earthquakes

How Earthquakes work Investigating Earthquakes--San Francisco Introductory Clips

[object Object],[object Object],[object Object],[object Object],What is an Earthquake?

[object Object],[object Object],Earthquakes

[object Object],[object Object],[object Object],What types of forces are created?

[object Object],[object Object],[object Object],What causes Earthquakes?

[object Object],[object Object],[object Object],[object Object],Seismic Waves

[object Object],[object Object],[object Object],[object Object],[object Object],3 Types of seismic Waves

[object Object],[object Object],[object Object],[object Object],[object Object],Types of Waves

How do we Measure Earthquakes? ,[object Object]

How do we Measure Earthquakes? ,[object Object],[object Object]

[object Object],[object Object],[object Object],How do we Measure Earthquakes?

[object Object],[object Object],[object Object],[object Object],[object Object],Measuring Earthquakes

Earthquake Dangers ,[object Object],[object Object]

Earthquake Dangers ,[object Object],A seiche is the sloshing of a closed body of water from earthquake shaking. Swimming pools often have seiches during earthquakes.

[object Object],Earthquake Dangers Ground fissures caused by liquefaction near the mouth of the Pajaro River in California during the 1989 Loma Prieta earthquake. When the surface of the ground oscillates, wet, sandy, and muddy soils can flow like a liquid. This is liquefaction. You can liquefy wet sand at the beach by pumping it up and down with your feet. Photo courtesy of the Loma Prieta Collection, Earthquake Engineering Research Center, UC Berkeley.

[object Object],Earthquake Dangers

Earthquake Safety ,[object Object],[object Object],[object Object],[object Object]

Earthquakes

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Earthquakes