Презентація на тему «Volcanic Eruptions and Hazards» (варіант 2)
242
Слайд #1
Volcanoes
Слайд #2
A volcano is an opening, or rupture, in the surface or crust of the Earth or a planetary mass object, which allows hot lava, volcanic ash and gases to escape from the magma chamber below the surface.
Слайд #3
On Earth, volcanoes are generally found where tectonic plates are diverging or converging.
Слайд #4
There are three common types of volcano:
composite volcanoes, often the most deadly;
shield volcanoes, which are large but generally less violent;
cinder cones.
composite volcanoes, often the most deadly;
shield volcanoes, which are large but generally less violent;
cinder cones.
Слайд #5
Erupting volcanoes can pose many hazards, not only in the immediate vicinity of the eruption.
Слайд #6
Lava has a temperature of more
than 1200 ° C, the rate of
2 to 40 kilometers
than 1200 ° C, the rate of
2 to 40 kilometers
Слайд #7
The largest volcano on Earth is Hawaii's
Mauna Loa. It is about 10 km tall from the sea floor to its summit (it rises about 4 km above sea level).
Mauna Loa. It is about 10 km tall from the sea floor to its summit (it rises about 4 km above sea level).
Слайд #8
The most active volcano in the continental USA is Mt. St. Helens (located in western Washington state).
Слайд #9
Volcanic eruptions continue posing ever-greater threats to life and property.
Слайд #10
South of Mexico City, Popocat petl has begun to come to life again.
Слайд #11
Another million people living
in the Naples area are threatened
by Mt. Vesuvius' continued unrest.
in the Naples area are threatened
by Mt. Vesuvius' continued unrest.
Слайд #12
THE END
