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Chapter 11 Earthquak

seismology

QuestionAnswer
A crack in the Earth's crust caused by stress fault
In order to reach an epicenter seismic waves must reach at least __________ stations three
Located on the surface of the earth directly above where the energy was released and is where the most damage will occur epicenter
The San Andreas fault is a line where many earthquakes because the crust _______. Moves past each other in opposite directions.
When the force on rocks is great enough, they break, producing vibrations called _______. Earthquakes
Scientists discovered changes in the Earth's interior by studying changes in seismic waves
The most destructive seismic waves are___ surface waves
the waves that reach a seismic station first and are the fastest are _______________ primary
The crust and upper mantle make up Earth's lithosphere
The middle mantle makes up Earth's athenosphere
Plates slide past one another at transform boundaries
The magnitude of an earthquake is measured by the Richter scale
Secondary waves ______ when they hit the liquid outer core. stop
Primary waves ________when they hit the liquid outer core. slow down
Scale that describes the amount of damage from an Earthquake Mercalli scale
When the soil is wet the shaking of an earthquake can cause it to act as a liquid. This is called liquefaction
Under water earthquakes cause the water to shake causing seismic waves. The seismic waves are called. tsunamis
Created by: cmorrow1
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