ESS 105 Quiz 1 Questions and Answers
100% Pass
What is a natural hazard? - ✔✔Natural process that poses threat to human life or
property. Threat of an event that LIKELY CAN happen
Difference between hazard and risk? - ✔✔A hazard is something that can cause harm,
e.g. electricity, chemicals, working up a ladder, noise, a keyboard, a bully at work,
stress, etc. A risk is the chance, high or low, that any hazard will actually cause
somebody harm.
Define risk - ✔✔The probability that a community (or person) will be subject to injury
or loss due to hazardous events
What is a natural disaster? - ✔✔natural event that causes significant damage to life or
property
Factors making disasters more prevalent as time passes - ✔✔
Fundamental physical driving factor for any hazards - ✔✔
What are earthquakes? - ✔✔The shaking is the vibestion of the Earth (seismic waves)
produced by energy released during rapid slip on a fault
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, What is the hypocenter? - ✔✔The spot within the Earth where earthquake waves
originate
What is the focus? - ✔✔the point within Earth where an earthquake originates (also
hypocenter!)
What is the epicenter? - ✔✔the point on the surface directly above the focus/
hypocenter
what is the fault plane? - ✔✔the plane that represents the fracture surface of a fault
What is the fault scarp? - ✔✔a small step on the ground surface where one side of a
fault has moved vertically with respect to the other
What is the elastic rebound theory? - ✔✔- Slow accumulation of strain in rocks around
locked fault
-Sudden release of stored elastic energy as fault erupts
-Aftershocks
-Cycle of strain accumulation
what are 3 types of faults? - ✔✔normal, reverse, strike-slip
what are 3 types of plate boundaries? - ✔✔divergent (plates move apart), convergent
(move toward each other), transform (plates move side to side)
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100% Pass
What is a natural hazard? - ✔✔Natural process that poses threat to human life or
property. Threat of an event that LIKELY CAN happen
Difference between hazard and risk? - ✔✔A hazard is something that can cause harm,
e.g. electricity, chemicals, working up a ladder, noise, a keyboard, a bully at work,
stress, etc. A risk is the chance, high or low, that any hazard will actually cause
somebody harm.
Define risk - ✔✔The probability that a community (or person) will be subject to injury
or loss due to hazardous events
What is a natural disaster? - ✔✔natural event that causes significant damage to life or
property
Factors making disasters more prevalent as time passes - ✔✔
Fundamental physical driving factor for any hazards - ✔✔
What are earthquakes? - ✔✔The shaking is the vibestion of the Earth (seismic waves)
produced by energy released during rapid slip on a fault
100% Pass Guarantee Olivia West, All Rights Reserved © 2025 1
, What is the hypocenter? - ✔✔The spot within the Earth where earthquake waves
originate
What is the focus? - ✔✔the point within Earth where an earthquake originates (also
hypocenter!)
What is the epicenter? - ✔✔the point on the surface directly above the focus/
hypocenter
what is the fault plane? - ✔✔the plane that represents the fracture surface of a fault
What is the fault scarp? - ✔✔a small step on the ground surface where one side of a
fault has moved vertically with respect to the other
What is the elastic rebound theory? - ✔✔- Slow accumulation of strain in rocks around
locked fault
-Sudden release of stored elastic energy as fault erupts
-Aftershocks
-Cycle of strain accumulation
what are 3 types of faults? - ✔✔normal, reverse, strike-slip
what are 3 types of plate boundaries? - ✔✔divergent (plates move apart), convergent
(move toward each other), transform (plates move side to side)
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