English project
What is a volcano?
A volcano is a mountain that
opens downward to a pool of
molten rock below the surface of
the earth. When pressure builds
up, eruptions occur. Gases and
rock shoot up through the opening
and spill over or fill the air with
lava fragments. Eruptions can
cause lateral blasts, lava flows,
hot ash flows, mudslides,
avalanches, falling ash and floods.
Volcano eruptions have been
known to knock down entire
forests. An erupting volcano can
trigger tsunamis, flash floods,
earthquakes, mudflows and
rockfalls.
Volcanoes are
usually located
where tectonic
plates meet. This
is especially true
for the Pacific
Ring of Fire, an
area around the
Pacific Ocean
where over 75% of
the volcanoes on
Earth are found.
Volcanoes can be active (regular
activity), dormant (recent historical
activity but now quiet) or extinct (no
activity in historical times and unlikely
to erupt again). While these terms are
useful, scientists are more likely to
describe volcanoes by characteristics
such a how they formed, how they erupt
and what their shape is.
10 Most Active Volcanoes In
The World
1.Yellow Stone Caldera
2. Mt. Vesuvius
3. Mt. Nyiragongo
4. Sakurajima
6. Ulawun
5. Galeras
7. Santa Maria
8. Mt. Merapi
9. Taal Volcano
10. Mauna Loa Volcano
Yellow Stone
Caldera
United States
Mt. Vesuvius
Italy
Mt. Nyiragongo
Africa
Sakurajima
Japan
Galeras
Colombia
Ulawun
Papua New Guineea
Santa Maria
Guatemala
Mt. Merapi
Indonesia
Taal Volcano
Filipinas
Mauna Loa
Volcano
Hawaii