A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that
allows hot lava ... Erupting volcanoes can pose many hazards, not only in the
immediate vicinity of ... (also know...
A volcano begins as melted rock (magma) which rises from deep inside the earth
toward the surface. As the gas-filled magma rises ...
Volcanoes erupt due to pressure that the weight of the rocks puts on the magma
and forces it to the surface out any available vent or exit provided to it.
Oct 25, 2010 ... Mount Merapi is expected to erupt at any moment, and Indonesian officials ... "
Rising magma causes solid rock to break, sending earthquake ...
... the earth forces molten matter to be expelled out to the surface, causing a
volcanic eruption. ... Did you know? ... Let us start with what the earth is made of:
Eruptions can cause lateral blasts, lava flows, hot ash flows, mudslides,
avalanches, falling ash and floods. Volcano eruptions have been known to knock
Jan 5, 2015 ... The eruption of a volcano can be one of the planet's most destructive events —
spewing huge amounts ... How It Happens | Man-Made Quakes.
Jan 6, 2016 ... What causes the world's explosive volcanic eruptions, like the 1980s ... gas
bubbles form from the magma in a process known as vesiculation, ...
Eruptions can cause lava flows, hot ash flows, mudslides, avalanches, falling ash
and floods. The danger area around a volcano covers about a 20-mile radius.
Get Volcano facts, photos, wallpapers, news and safety tips at National ... Ash
and toxic gases can cause lung damage and other problems, ... Scientists
estimate that more than 260,000 people have died in the past 300 years from
volcanic eruptions and their aftermath. ... Quiz: What You Don't Know About