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21 Cards in this Set
- Front
- Back
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Earthquake
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the shaking of Earth by seismic waves radiating away from a disturbance, most commonly a fault movement
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Tornado
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spinning funnels of wind whose rotating wind speeds can exceed 480kn.hr
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Hurricanes
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a large tropical cyclonic storm with wind speeds exceeding 119/kmhr, called a typhoon in the western pacific ocean and a cyclone in the Indian Ocean
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Energy
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capacity for performing work
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Great Natural Disasters
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a disaster so overwhelming that outside assistance is needed to handle the rescue and recovery for the region
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Mitigation
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actions taken by humans to minimize the possible effects of a natural hazard
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Volcano
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an opening of the earth's surface where magma has poured or blown forth, typically creating hills or mountains
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Magnitudes
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an assessment of the size of an event. Magnitude scales exist for earthquakes, volcanic eruptions, hurricanes, and tornadoes. For Earthquakes, different magnitudes are calculated for the same earthquake when different types of seismic waves are used.
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Frequency
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# of events in a given time interval. For Earthquakes, it is the number of cycles of seismic waves that pass in a second; frequency= 1/period.
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Return Period
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Amount of time between an event of a given size
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Exponential Growth
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growth in a compound fashion that, given time, leads to incredible numbers.
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FERTILITY RATE
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BIRTH RATE
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mortality rate
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death rate
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demographic transitions
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the change from a human population with high birth rates and high death rates to one with low birth rates and low death rates
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pandemic
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a disease occurring over a wide area and affecting many people
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influenza
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highly contagious virus-caused diseases. The word influenza is commonly shortened to flu.
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virus
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submicroscopic agents of many infectious diseases. Viruses replicate inside living cells of organisms.
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epidemics
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an outbreak of disease
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carrying capacity
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the maximum pop size that can be supported under a given set of environmental conditions
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NATURal hazard
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a source of danger to life, property, and the environment
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natural disaster
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an event or process that destroys life and/or property
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