We’re going to talk about some natural disasters.
(VOLCANOES AND GEISERS; FLOODS;
(Now, look at the scadle model)
A natural disaster is a natural phenomenon which
could cause many deaths and damage.
Most of the natural disasters are caused by the
human being, who disturbs the environment.
Some of the most dangerous disasters might be:
Landslides are going to be the central topic of my
It’s a geological and natural event,
a ground movement which can sweep
away a large mass of land and
finds in its path.
(Such as, rocks, trees, houses, snow(avalanches)…)
Landslides can be caused by a
lot of reasons:
On the one hand, the most common
ones are natural reasons:
- Both earthquakes and volcanic eruptions
shake the ground and cause land displacements.
- Any fragment of unstable ground could slide
force of gravity.
- In areas of heavy rainfall, ground becomes mud
makes possible landslides.
- Water and wind erode the basses of rocks. As a
On the other hand, there are artificial reasons too. Anything
man does could change so many things…
Some things (like the following ones) could be the cause of
-An explosion caused by men in order
some lands for building.
- Huge buildings, heavier than they
be, make the ground becomes more
unsteady and unstable.
These reasons, taken in conjunction
with some natural events, cause
Slope material, that
becomes saturated with
water, may develop into
a mud flow.
It may pick up trees,
A big mass of
place to a
the ground and
flow like water.
A landslide is
one of the most
Before a landslide takes place we
-Ground becomes soft because of
the abundance of water.
-Some cracks on the ground and
even on houses’ walls apperar due
to instability of ground.
The most powerful
cause an aftershock,
a replica of the first
one caused by the
force of the first
A landslide is a rather
dangerous disaster. You
could run these risks:
-Pull up trees.
-Torn-up street furniture.
-And unfortunately, death people.
A landslide is quite
difficult to prevent
becuase of its difficult
Anyway, we can take
Buildings’ foundiations must
be as strong as possible in
order to avoid any crack.
Buildinds mustn’t be near
hillsides or mountains.
A good practices’ system in
earthquakes and landslides.
In addition, governments and police must have a great policy to
act in these kinds of sitiuations:
Good equipments and rescue teams to rescue victims.
Ditches can stop the adavnce of the ground movement.
Spain, due to its slopes and climate, is a country prone to
(April, first 1986) In Spain, Granada, a huge six-million-tonne
mass started to slide. It devastated the crops, a quarry,…
Few days later, the ground movement, which was moving at one
meter per hour, arrived to the school of a village.
Police evacuate all the small town.
April, 19th the ground
movement was arriving to
Velillos river. What would
happens if this movement
arrives to the river? It could
overflow the river.
Government tried to drain the
river when it started to
become full, but it didn’t work.
Fortunately, it didn’t rain and
flow didn’t become full.
Febrary, 14th 2010, in Italy, Sicily,
uncessant rainfalls make a mountain
Inhabitants just can wait for ground
Two days later, a fragment of the
mountain where this village takes place
collapsed, and more than 23.000
people were evacueted by the police.
Cracked roads and destroyed houses
are the result of this great landslide.
Three days later, Mayor proclaimed state of emergency
and calamity and, just some days later, villages around
were evacueted too.