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geo directory

Some of these questions must be answered by consulting your textbook which correlates with the video series.  Consult: "Physical Geology -Earth Revealed" by Carlson, Plummer and McGeary; published by McGraw Hill, New York City, NY




 





















 9. Earthquakes 
Showing actual footage of earthquakes and their aftermath, this program discusses the forces that fuel these massive events. Faults, waves, and the transfer of energy from the epicenter are explained, and histories of the seismograph and Richter scale are presented. The program also describes devices being developed to study — and eventually predict — earthquakes.



Episode 9:   Earthquakes

What is the ultimate cause of movement within the earth's crust?

 

What is the relationship between earthquakes and mountain building?

 

What causes earthquakes?

 

What is a fault?


What two plates is the San Andreas Fault a boundary between?


Earthquakes occur when ________ exceeds __________.

 

What happens to the energy released during an earthquake?

 

Summarize the different types of seismic waves. Be specific.

 
What does the time interval between P and S waves tell us about the earthquake epicenter?

 

What is a seismograph and how does it work?

 

What geophysicist first measured Magnitude?

 

What is the difference in energy released between one Richter value and the next?



What was the magnitude of the Alaska Earthquake of 1964?

 

How does the period of an earthquake relate to a building's natural period?

 

What happens when they match?

 

Why was the Parkfield area chosen as a good location to study earthquakes?

 

What do scientists hope to see before the next Parkfield earthquake?


 

Why are earthquakes still difficult to predict?





link to the answers (this will open after the assignments are collected)






                                                                                                                    
 



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