natraul hazards Flashcards
what is a natural hazard
physicial events
give a type of a natural hazard
earthquake
volcano
what is a disadvantages of a natural hazards
population growth
deforstation
weath
what are the earths 4 layers
inner core
outer core
the mantle
the crust
what is it called when the crusts split into fragments
tectonic plates
what are the 2 type of tectonic plates
oceanic (thin)
continental (thick)
what happens when the 2 tectonic plates move
volancos
earthquakes
what is a constructive earth quake
small earthquakes as plates pull apart
what is a destructive earthquake
violent earthquakes as the pressure builds then realises
i barbie a conservative earthquake
plates slide past eachother
what is a constructive volcano
hot magma
what is a destructive volcano
oceanic plate under a continental plate and melts magma forcing it to come up and form volcanos
what are 2primary effect of an earthquake
property
people
roads
pipes (water+gas)
what are 2 primary effect of a volcano
property
people
air pollution
water supplies contaminated
what are 2 secondary effects of earthquakes
blocked transport
business reduced
broken gas pipes cause fire
broken water pipes lead to a lack of fresh water
what are 2 secondary effect of a volcano
economy slows down
floods
ash breaks down leading to farms not being able to farm
____ Etna
Mount
mount ___
etna
a disadvantages of mount etna
lava flows
ash clouds
what are 2 immediate response to tectonic hazards
rescue teams
treat injured
provide food/ shelter
recover bodies
stop fires
what is a long term response to tectonic hazards
repair buildings
restore utilities
settle locals
develop more change for the economy
install monitory technology
