Download Ciber @prendiz project

Ciber@prendiz project
By Elias, Diego, Rodrigo and
Jose Carlos
Index
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Tectonic plates
Names of the principal plates
Earthquakes
Earthquakes in Peru
Volcanoes
Tectonic Plates
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The earth's surface is
broken into seven large
and many small moving
plates. These plates,
each about 50 miles
thick, move relative to
one another an average
of a few inches a year.
Three types of movement
are recognized at the
boundaries between
plates: convergent,
divergent and transformfault.
Names of the principal plates
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North american plate,
Eurasia plate, Africa
plate,
South american plate,
australian plate,
pacific plate.
Earthquakes
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One of the most
frightening and
destructive phenomena
of nature is a severe
earthquake and its
terrible aftereffects. An
earthquake is a sudden
movement of the Earth,
caused by the abrupt
release of strain that has
accumulated over a long
time.
earthquakes
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For hundreds of millions
of years, the forces of
plate tectonics have
shaped the Earth as the
huge plates that form the
Earth's surface slowly
move over, under, and
past each other.
Sometimes the
movement is gradual.
earthquakes
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At other times, the plates
are locked together,
unable to release the
accumulating energy.
When the accumulated
energy grows strong
enough, the plates break
free. If the earthquake
occurs in a populated
area, it may cause many
deaths and injuries and
extensive property
damage.
Earthquakes in Peru
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In Peru the earthquakes
are common. They are
very strong (sometimes)
and sometimes they are
lower. In 1974 a strong
earthquake in Lima make
a lot of people die and
some people lose their
houses and all their
properties.
Volcanoes
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There are several ways in
which a volcano can form,
just as there are several
different kinds of
volcanoes. Hot magma,
rising from lower reaches
of the Earth, eventually,
but not always, erupts onto
the surface. During the
eruption, lava and ash
form a cone. This cone is
what we know as a
volcano.
volcanoes
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Strong earthquakes
accompany rising magma
just before an eruption.
Volcanism is part of the
process by which a
planet cools off. Among
the different kinds of
volcanoes are: (1) shield
volcanoes, (2) cinder
cones, and (3)composite
cone volcanoes.
Members
 6th
Grade San Pedro school
Elias
 Jose Carlos
 Rodrigo
 Diego
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