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Exam (elaborations)

Meteorology || very Flawless.

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  • Course
  • Meteorology
  • Institution
  • Meteorology

natural hazard correct answers Any natural process that is a potential threat to human life and property natural disaster correct answers great destruction or loss of life caused by natural forces rather than by human actions Catastrophe correct answers an event resulting in great loss and mi...

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  • August 18, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Meteorology
  • Meteorology
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FullyFocus
Meteorology || very Flawless.
natural hazard correct answers Any natural process that is a potential threat to human life and
property

natural disaster correct answers great destruction or loss of life caused by natural forces rather
than by human actions

Catastrophe correct answers an event resulting in great loss and misfortune

Most common hazard related deaths correct answers Heat

Reoccurrence Interval correct answers Probability that a natural event of a certain magnitude will
happen within a very period of time
past records/geology/climate>prediction
an average quantity: time

Reoccurrence Interval Equation correct answers RI = (n+1)/(m) where n= number of years of
data
and m = number of years with flood

average frequency correct answers Frequency is the inverse of reoccurrence interval: 1/time

Magnitude of an event correct answers Inversely porportionate to its frequency: 1/f

fractal correct answers an irregular shape that looks much the same at any scale on which it is
examined

feedback effect correct answers Where a small disturbance in a system leads to effects that
increase that disturbance (positive feedback) or decrease it (negative feedback)
global warming > less ice> sun not reflected> colder

Precursors correct answers natural events that precede disasters

Mitigation correct answers lessening of something that causes suffering
good land planning

Oppositions to mitigation correct answers -hazardous areas heavily populated
- regulations ignite legal and political opposition
- restrictions viewed as violation of rights

risk correct answers Hazard considered in light of reoccurrence interval and expected cost
measured in dollars

Risk equation correct answers R= probability of loss x cost $

, Earth radius correct answers 6400 km

Highest point on earth correct answers Mt. Everest 8850m

Deepest point in the ocean correct answers Marianas Trench 11000m

Earth circumference 2r correct answers 40000 km

Width of US correct answers 4000 km

Layers of earth by rock composition correct answers Core mantle crust

Lithosphere correct answers A rigid layer made up of the uppermost part of the mantle and the
crust.

Asthenosphere correct answers The soft layer of the mantle on which the lithosphere floats.

continental crust correct answers Silica rich, low density 2.7g/cm3, 30/50 km thick

oceanic crust correct answers Iron magnesium rich, higher density 3gcm3 7km thick

Mantle density correct answers 3.3 g/cm3

Monorvicic discontinuity correct answers Boundary between earth crust and mantles

low velocity zone correct answers the asthenosphere underlying oceanic lithosphere in which
seismic waves travel more slowly, probably because rock has partially melted

Isotasy correct answers Proportion of mass immersed in liquid equals the density of the floating
solid divided by the density of the liquid
think oceanic crust as an ice cube and continental as a cork
floating Objects displace the same amount of liquid as their mass

lithospheric plates correct answers large pieces of Earth's lithosphere that move over the
asthenosphere
aprox 8cm a year

plate tectonics correct answers A theory stating that the earth's surface is broken into plates that
move.

divergent boundary correct answers A plate boundary where two plates move away from each
other.

convergent boundaries correct answers Places where tectonic plates are coming together

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