Слайд 3 Tornado - monstrously narrow rotating column of air that
extends from a thunderstorm cloud to the ground. As the
wind is invisible, you can not always see a tornado. Visible sign - funnel consisting of water droplets, sometimes items throughout its existence tornadoes are not always in contact with the ground. Dust and debris in a rotating funnel also make a tornado visible and indicate the position of the tornado.
Слайд 4Known fact: Tornado - the most violent disaster.
Слайд 6Eruption - process emissions volcano on the Earth's surface hot
debris, ash outpouring of magma, which izlivshis on the surface,
it becomes lava. Eruption may have a time period ranging from several hours to many years.
Слайд 7Interesting fact: On Earth, about 1500 active volcanoes, not counting
submarines. Of these, only 20-30 erupt each year.
Слайд 9Earthquake - is any wobble in the Earth surface due
to natural causes, among which the main role belongs to
tectonic processes (mass transfer inside the Earth). It is a common phenomenon observed in many areas of continents and on the ocean floor.
Слайд 10Interesting fact: In the main earthquakes happen because of geological
problems, but sometimes they can be caused by landslides, explosions
in mines, nuclear tests and volcanic activity.
Слайд 12Flood - is significant flooding areas from rising water levels
in the river, lake or sea during snowmelt, rainfall, wind
surges, with traffic jams, ice jams, etc.
Слайд 13Interesting fact: The annual damage to the world economy floods
and other water-related disasters, ranging from 50 to 60 billion
U.S. dollars.
Слайд 15 Ice - this dense layer of ice formed on
the surface of the earth, sidewalks, roadway and on objects
(trees, wires, etc.) when freezing of supercooled rain and drizzle (fog)
Слайд 16Interesting facts: In terms of handling and stability of the
car on the road is much more dangerous ice icy.