Earthquakes and Plate Boundaries Earthquakes and Seismic Waves Measuring Earthquakes Earthquake Hazards and Safety
100
What is a fault?
This is a fracture surface along which rocks can slip
100
What is a P wave?
The type of seismic wave that travels the fastest.
100
What is a seismograph?
This instrument helps to measure the magnitude of an earthquake.
100
What is fires caused by ruptured gas or electrical lines?
The most common hazard following an earthquake.
200
What is elastic strain?
This is the direct cause of earthquakes
200
What is secondary waves?
This type of seismic wave can travel through solids but NOT through liquids.
200
What is a seismograph?
This instrument records seismic waves.
200
What is a tsunami?
Another name for a seismic sea wave.
300
What is a strike-slip fault?
The fault type that is assocaited with transform plate motion and moderate, shallow earthquakes
300
What is P waves?
The following statement is true of what type of seismic wave:
"They travel fastest through rock"
300
What is the P-waves?
This type of seismic wave shows up first on a seismograph.
300
What is liquefaction?
The type of hazard when a building is sitting on loose or unstable ground and an earthquake causes that dirt to move like liquid.
400
What is convergent?
The plate motion associated with a reverse fault and STRONG, DEEP earthquakes
400
What is a surface wave?
This type of seismic wave causes the most damage.
400
What is three?
The amount of seismograph recordings needed to locate the epicenter of an earthquake.
400
What is fault lines?
People living along this are at the greatest risk from the effects of earthquakes.
500
What are weak and shallow?
The characteristics associated with earthquakes that come from divergent plate motion and a normal fault line
500
What are P and S waves?
These types of waves help scientists to determine the internal structure of the earth.
500
What is the Moment Magnitude Scale?
The amount of energy released during an earthquake is measured on this type of scale.
500
What is BEING PREPARED!
The best defense against an earthquake






Earthquakes

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