HW 3 Flashcards
What is defined as an episode of ground shaking generated when rocks break and scrape underground and send vibrations through earth?
Earthquake
What is defined as vibrations generated by earthquakes?
seismic wave
What is the main cause of earthquakes?
faults
Which of the following is not a type of fault
strike-slip
IRREGULAR
reverse
normal
What is defined as the point of initial breakage and movement along a fault, where seismic waves originate?
focus
What is the type of seismic wave that moves fastest away from an earthquake?
P-wave
Seismologists can determine the location of an earthquake.
True
Seismologists can determine the depth of an earthquake.
True
Seismologists can preciously predict when earthquakes will occur.
False
Which scale measures earthquake intensity in relation to infrastructure and surface damage?
Mercalli
What is defined as a measure of the amount of energy released by an earthquake by measuring the amplitude of seismic waves on a seismogram?
Magnitude
Tsunamis are normally produced by a magnitude 8 and above earthquake.
true
Most earthquakes occur at what?
plate boundaries
The highest magnitude and most destructive earthquakes occur at what type of plate boundary?
convergent
The Genoa Fault in the Carson-Reno area is able to produce about what magnitude earthquake?
Around 7.4
Tsunamis can travel at what speed?
800km
The Pacific Northwest is capable of producing a megaearthquake and tsunami along the Cascadian subduction zone
true
The probability that an earthquake can occur in certain time intervals can be determined by seismologists.
true
Earthquake engineering can save what?
lives
costs
infrastructure
Is the reno and Tahoe area seismically active?
Yes
