hazards -types of volcanoes Flashcards

1
Q

how many types of volcanoes are there?

A

6

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2
Q

what are the 6 types of volcanoes?

A

.fissure
.shield
.dome
.ash-cinder
.composite
.caldera

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3
Q

what are the characteristics of a fissure volcano?

A

.gentle basaltic slope of lava
.low silica content lava
.basic
.effusive

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4
Q

what are the characteristics of a shield volcano?

A

.vent of magma
.gentle slope of basaltic lava flow
.low silica content lava
.basic
.effusive

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5
Q

what are the characteristics of a dome volcano?

A

.vent of magma
.steep convex slope from thick, fast cooling lava
.low silica content lava
.basic
.basaltic lava
.explosive

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6
Q

what are the characterises of a ash-cinder volcano?

A

.vent of magma
.fine ash
.cinder
.medium silica content lava
.basic or acidic
.basaltic or andesitic
.explosive

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7
Q

what are the characteristics of a composite volcano?

A

.vent of magma
.branch pipe of lava
.ash
.high silica content lava
.acidic
.andesitic
.explosive

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8
Q

what are the characterises of a caldera volcano?

A

.magma
.ash walls
.old cone + new cone
.caldera (bumps)
.very high silica content lava
.acidic
.explosive

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