San andreas- how the earth was made



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SAN ANDREAS- HOW THE EARTH WAS MADE

Name_________________________________________________


1.) How long is the San Andreas Fault? ___________________


2.) Many faults are buried, is the San Andreas? __________


3.) In what year was the “great San Francisco Quake?” __________________ How long did the shaking last? ___________


4.) How did the fault get its name?

5.) What type of geologist uses robots & other technology to map sea floor topography? _____________________________________

6.) Is the San Andreas Fault always on land? ________________


7.) Before the area of the San Andreas became a transform plate boundary, what was happening there?

8.) How were scientists able to use the dry creek bed to calculate the average speed of plate movement?

9.) What is the average speed that the San Andreas moves in one year? _____________ Is it a steady movement? ____________


10.) What is unique about Hollister, CA?


11.) How do geologists know that the Earth is moving in Hollister?

12.) Why is Parkfield, CA famous?

13.) Serpentinite was the rock found in core samples taken beneath Parkfield. What

mineral is in this rock? ______________

Why is that important to both Hollister & Parkfield?

14.) If we look to the distant future, Los Angeles might possibly be a suburb of what city? ____________________________


15.) In the northern Coachella Valley, scientists have found that every ____________ years the fault should have slipped ____________ ft…but it hasn’t. What is going on?

16.) Scientists have long known about several types of earthquake waves but recently they have discovered a new type that slippage on the San Andreas could create, what is the new type?______________________________________ Why might it occur on portions of the San Andreas?

17.) What does this new wave type have to do with the “Great Quake” of 1906 & a possible one in Los Angeles?

Name: _______________________ Date: _______________________ Period: __________

How the Earth was Made:

San Andreas Fault


  1. When did the biggest earthquake on record hit California?_______



  1. What happened to the picket fence in Marin County? __________

____________________________________________________

  1. Why does Mussel Rock cliff exist? _________________________

_____________________________________________________

  1. What 2 plates are on either side of the fault? __________________

______________________________________________________

  1. How long ago did the theory of plate tectonics come about? _____________



  1. What is subduction? __________________________________________________________



  1. How are the plates moving today? _______________________________________________



  1. How long is the San Andres Fault? _______________________________________________



  1. Why did the creek bend at the fault? ______________________________________________



  1. On average, how fast are the plates moving? _______________________________________



  1. Is it a slow steady movement? ___________________________________________________



  1. What is unique about Hollister? __________________________________________________



  1. What kind of rock was found in the heart of the fault? _________________________________



  1. What are its characteristics? ____________________________________________________



  1. What will eventually happen to Los Angeles and San Francisco? _______________________

___________________________________________________________________________

  1. Can we predict earthquakes? __________________________________________________

17. What can we predict? ________________________________________________________

__________________________________________________________________________



  1. How often do earthquakes generally strike Southern California? _______________________



  1. How long ago was the last one? ________________________________________________



  1. Why is it a problem that the surface is barely moving? _______________________________

__________________________________________________________________________

  1. How fast are the rocks moving underground? _____________________________________



  1. What is going to happen after too much pressure? _________________________________



  1. Why would an earthquake in this region be more devastating today than it was 200 years ago? ___________________________________________________________________________



  1. What is the cone in the wave compared to? ________________________________________



  1. What are the chances of a major earthquake hitting Southern California in the next 30 years? __________________________________________________________________________



  1. What kind of damage can be expected if Los Angeles gets a major earthquake? ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________

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