Waves
Faults
Earth's layers, soil and rocks
More Waves
Shake it up, Baby
100
These waves move through Earth by causing particles in rocks to vibrate at right angles to the direction of the waves
What is secondary wave
100
A reverse fault is located where plates ___?___
What is come together
100
The outermost layer of the Earth
What is lithosphere
100
When do Primary waves arrive at the seismograph station
What is first
100
Scientists use use information from at least three seismograph stations to locate this
What is the epicenter of an earthquake
200
By noting the change in the speed and path of ___?___ scientists have been able to determine the structure of the Earth's interior
What is seismic waves
200
The San Andreas Fault in California is an example of a ___?fault
What is strike-slip
200
The solid inner core is made mostly of __?__
What is iron
200
The farther apart primary, secondary and surface waves are, the ___?___ the epicenter is
What is farther
200
Seismologists use this to describe the magnitude of earthquakes
What is Richter Scale
300
The waves that cause most of the destruction during an earthquake
What is surface waves
300
Tension causes what kind of faults
What is normal fault
300
Shaking from an earthquake can cause wet soil to become more liquid. This is called __?__
What is liquefaction
300
These waves move through Earth, causing particles in rocks to move back and forth in the same direction as the waves
What is primary waves
300
An earthquake with a __?___of 6.5 releases about 30 times as much energy as one that registers 5.5 on the Richter Scale
What is magnitude
400
These waves don't pass through liquid, so they are stopped when they hit the outer core
What is secondary waves
400
At which kind of a fault the rocks above the fault surface are forced up and over the rocks below the fault surface
What is reverse fault
400
When rocks break because of stress, the energy released is in the form of ___?___
What is earthquake
400
An earthquake causes a very long ocean wave over its focus
What is tsunami
400
Buildings with flexible, circular moorings or foundations
What is seismic-safe structures
500
The slowest seismic waves
What is surface waves
500
A fault between two plates that are moving sideways past each other
What is strike-slip fault
500
The boundary between the upper mantle and the crust is called the ___?___
What is Moho discontinuity
500
The area where no seismic waves are detected after they are released by an earthquake
What is shadow zone
500
The scale that measures an intensity VII of destruction earthquake
What is Mercalli scale
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