Explain how disasters are associated with concentration or dilution of
Explain (with examples) how energy conservation applies to natural
Explain why disaster scales are based on the Order‐of‐Magnitude concept,
and interpret graphs with logarithmic scales.
o Return Period = RP = Time span of data / # of cases of mag. M
o The average number of years between disaster events of the same
Compare and contrast risk, perception of risk, hazard, and vulnerability.
o Hazard: Any event or situation that could cause human (death,
injuries) or economic harm (property and prosperity)
o Risk = Vulnerability x Hazard
Probability that any given hazardous event might occur (chance of potential loss)
o Perception of Risk: how big/how many?, how experienced we are,
appearance/drama, how others react, media, relation to personal
experience/exposure, frequency, geography location, medical
aftermath, illusion of control, age
Recognize how poor humans are at judging risk.
o Human perception of risk is flawed. Do not deal well with
Recognize how your perceptions skew your ability to j