Volcanoes Volcanoes
Volcanoes are mountains that erupt, sometimes explosively Volcanoes are mountains that erupt, sometimes explosively
Where do volcanoes erupt? Where do volcanoes erupt?
Vulcan Vulcan Roman God of fire and blacksmiths Roman God of fire and blacksmiths
Typical ocean and continental types of volcanoes Typical ocean and continental types of volcanoes
The ring of fire – – oceanic volcanoes oceanic volcanoes The ring of fire
Cinder Cones Cinder Cones
Shield Volcanoes Shield Volcanoes
Strata Volcanoes Strata Volcanoes
Calderas Calderas
Plugs (necks) Plugs (necks)
Volcanoes in Canada Volcanoes in Canada � Mount Meager � Mount Meager � Mount � Mount Cayley Cayley � Anahim � Anahim Volcanic belt Volcanic belt
Volcanoes in Iceland Volcanoes in Iceland
Geothermal volcanoes Geothermal volcanoes
Types of eruptions Types of eruptions
Hot Spots Hot Spots Mauna Kea (dormant) Kilauahe’a active volcano Mauna Loa (dormant) � Hawaii! � Hawaii! � A new volcano is formed every time the plate � A new volcano is formed every time the plate shifts over the hotspot shifts over the hotspot
Lava fountain Lava fountain
’s Hair s Hair Pele’ Pele
Plinean Eruptions Eruptions Plinean � Glowing Avalanches � Glowing Avalanches
Mount Vesuvius Mount Vesuvius � Today, 700 000 people � Today, 700 000 people live on the slopes of the live on the slopes of the volcano. volcano. Eruption in year 79 destroyed the cities of Pompeii, Herculaneum, Oplontis, and Stabies
Pompeii— —Mount Vesuvius Mount Vesuvius Pompeii
Pumice– – violent separation of gas from lava violent separation of gas from lava Pumice produces ‘ ‘rock foam rock foam’ ’ produces
Underwater volcanoes Underwater volcanoes … …
Pillow eruptions Pillow eruptions Becomes a pillow Lava
Underwater vents Underwater vents A source of life A source of life
Dave” ” “Dave Life on “ Life on
Eel City” ” “Eel City “
Inhabitants in a crater of an Inhabitants in a crater of an underwater volcano underwater volcano
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