بحث حول الكوارث الطبيعية للسنة الأولى ثانوي ( انجليزية )

Tsunami












Tsunami
is a series of sea waves fast and powerful that are caused by earthquakes or
volcanic eruptions or the fall of meteors from outer space in the seas and
oceans.
And frequently occurring phenomenon of the tsunami in the
Pacific region, where more than half of the world's volcanoes. When this
phenomenon lies the coastal areas exposed without prior notice, in some cases,
the waves of very powerful. And these waves can carry rocks from the walls to
repel the waves, weighing tons, twentieth, and to throw out to a distance of
twenty meters.




The volcano














The volcano is a place out or emits magma with hot fumes and gases associated with the
depth of the
earth's crust and occurs during the craters or
cracks. And accumulate
magma flow or
by type to
form the different land forms, including conical hills or mountains,
volcanic high.




Seismic



Seismic are a sudden vibration affects
the earth's crust when rocks explode, which was subjected to the
process of expansion, and may be
vibration is great,
but almost hardly notice may be devastating,
severely.

شكراااااااااااااااااااااااااا