Volcanoes Volcanoes Volcanoes are mountains that erupt, sometimes - - PowerPoint PPT Presentation

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Volcanoes Volcanoes Volcanoes are mountains that erupt, sometimes - - PowerPoint PPT Presentation

Mar 26, 2023 214 likes •587 views

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

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Volcanoes Volcanoes

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Volcanoes are mountains that erupt, sometimes explosively Volcanoes are mountains that erupt, sometimes explosively

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Where do volcanoes erupt? Where do volcanoes erupt?

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Vulcan Vulcan

Roman God of fire and blacksmiths Roman God of fire and blacksmiths

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Typical ocean and continental types of volcanoes Typical ocean and continental types of volcanoes

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The ring of fire The ring of fire – – oceanic volcanoes

  • ceanic volcanoes
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Cinder Cones Cinder Cones

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Shield Volcanoes Shield Volcanoes

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Strata Volcanoes Strata Volcanoes

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Calderas Calderas

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Plugs (necks) Plugs (necks)

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Volcanoes in Canada Volcanoes in Canada

  • Mount Meager

Mount Meager

  • Mount

Mount Cayley Cayley

  • Anahim

Anahim Volcanic belt Volcanic belt

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Volcanoes in Iceland Volcanoes in Iceland

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Geothermal volcanoes Geothermal volcanoes

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Types of eruptions Types of eruptions

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Hot Spots Hot Spots

  • 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

Kilauahe’a active volcano Mauna Kea (dormant) Mauna Loa (dormant)

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Lava fountain Lava fountain

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Pele Pele’ ’s Hair s Hair

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Plinean Plinean Eruptions Eruptions

  • Glowing Avalanches

Glowing Avalanches

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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

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Pompeii Pompeii— —Mount Vesuvius Mount Vesuvius

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Pumice Pumice– – violent separation of gas from lava violent separation of gas from lava produces produces ‘ ‘rock foam rock foam’ ’

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Underwater volcanoes Underwater volcanoes

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Pillow eruptions Pillow eruptions

Lava Becomes a pillow

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Underwater vents Underwater vents A source of life A source of life

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Life on Life on “ “Dave Dave” ”

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“ “Eel City Eel City” ”

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Inhabitants in a crater of an Inhabitants in a crater of an underwater volcano underwater volcano