chapter 9 flashcard definitions

chapter 9 flashcard definitions - aa a lava flow with a...

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aa – a lava flow with a rubbly surface Active volcano – a volcano that has erupted within the past few centuries and will likely erupt again Aerosols – tiny solid particles or liquid droplets that remain suspended in the atmosphere Caldera – a large circular depression with steep walls and a flat floor, formed after an eruption as the center of the volcano collapses into the drained magma chamber below Cinder cone – a subaerial volcano consisting of a cone-shaped pile of tephra whose slope approaches the angle of repose of the tephra Columnar jointing – a type of fracturing that yields roughly hexagonal columns of basalt; columnar joints form when a dike, sill, or lava flow cools Dormant volcano – a volcano that has not erupted for hundreds to thousands of years but does have the potential to erupt again in the future Effusive eruption – an eruption that yields mostly lava, not ash Explosive eruptions –
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chapter 9 flashcard definitions - aa a lava flow with a...

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