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Science Flashcards
Mr.Links
10
Science
6th Grade
12/07/2010

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Term
Volcano
Definition
a mountain that forms when molten rocks called magma,is forced to the Earth's surface
Term
Lava
Definition
is the magma that flows onto the Earth's surface
Term
Pyroclastic material
Definition
consists of the rock fragments created by explosive volcanic eruptions
Term

Shield Volcanoes

 

Definition
are built out of layers of lava from repeated nonexplosive eruptions
Term
Cinder Cone Volcanoes
Definition
are small volcanic cones made entirely of pyroclastic material from moderately explosive eruptions
Term
Composite Volcanoes 
Definition

sometimes referred to as stratovolcanoes, are one of the most common types of volcanoes

 

Term
Crater
Definition
at the top of the central vent in volcanoes is a funnel-shaped pit
Term
Caldera
Definition
forms when a magma chamber that supplies material to a volcano empties and its roof collapses 
Term
Rift
Definition
forms between the plates
Term
Hot Spot
Definition
are places on the Earth's surface that are directly above columns of rising magma
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