VOLCANOES

VOLCANO IN US

• A major volcano in the us is mt Mauna Loa
• Mauna Loa is located in Hawaii and is a
• Shield volcano that last erupted in 1984

MAJOR VOLCANO IN THE WORLD

• Mount Vesuvius is a well known
• For the disaster in Pompeii
• This volcano is in Italy and is the only
• Volcano in Europe that has erupted in the
• Past 100 years

HOW VOLCANOES FORM

• Volcanoes form when the outer mantle of earth
• Melts and when pressurized causes the magma to be
• Pushed toward the surface causing the magma to erupt through
• Holes in the tectonic plates

MAGMA OR LAVA

• Magma is molten rock that is still underground
• Lava is molten rock that has surfaced above ground
• And is flowing.

ACTIVE OR EXTINCT

• For a volcano to be active I has to have
• Erupted once in the last 10,000 years
• And extinct is when it hasn't erupted in the
• Last 10,000 years

ENVIRONMENTAL BENEFITS

• The ash is used as a coolant in the atmosphere
• And eruptions lets out excess heat in the earth
• Cooling it off