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(2023·南京市六校联合体调研试题)Natural disasters take many different forms
and can happen without warning.Earthquakes,floods,volcanoes,drought
typhoons and hurricanes are all natural disasters.
The earthquake on December 26th,2004 resulted in one of the worst natural
disasters in living memory.It was a massive underwater quake and occurred in
the Indian Ocean.This caused a huge tsunami to cross the Indian Ocean.It
destroyed coastlines and communities and brought death and destruction to
many people.The survivors needed fresh water,food and shelters as well as
medical help.People from all over the world gave money so that towns and
villages could be rebuilt.
The surface of the earth is not always looked as it does today;it is moving
continuously and has done so for billions of years.This is one cause of
earthquakes,when one section of the earth collides with another.Scientists can
predict where this might happen and the area between plates is called a fault(
line.However,earthquakes do not always happen on fault lines,
which is
why they are so dangerous and unpredictable.
Volcanoes happen where the earth's crust is thin -lava,dust and gases
erupt from beneath the earth.They can rise into a massive cone shape like a
mountain and erupt,or they can be so violent that they just explode directly from
the earth with no warning.
Hurricanes are extremely strong storms and often happen in the Caribbean.
They cause high winds,huge waves,and heavy flooding and can cross hundreds
of miles.
Floods happen in many countries after very heavy rainfall.When rain pours
for weeks at a time and rivers overflow,people and property can be trapped or
simply washed away.
Another kind of natural disaster is drought.This happens when there is no
water -when it doesn't rain for a long time and rivers dry up.This causes
crops to fail,animals to die and sadly,people to starve.
All the disasters are very dangero