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Volcanoes
Lou baker
15
Science
7th Grade
03/27/2014

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Term
Volcano
Definition
An opening in the earth's crust that erupts gases ash and lava
Term
Vent
Definition
Opening where magma escapes
Term
Crater
Definition
Steep sided depression inside a volcano
Term
Where do volcanos occur
Definition
Divergent boundaries like iceland
Term
Where do volcanoes occur
Definition
Convergent boundaries are the most common
Term
Where do volcanoes occur
Definition
Hot spots which are weak spots in the crust like the Hawaiian islands
Term
Eruption factors
Definition
Amount of dissolved gases and water vapor
Term
Eruption factors
Definition
Amount of silica
Term
Type of volcano
Definition
Shield volcano- gentle slope(mostly lava)
Term
Type of volcano
Definition
Cinder cone- steep slope (mostly ash)
Term
Tephra
Definition
Clumps of airborne ash
Term
Type of volcano
Definition
Composite cone- intermediate slope ( ash and lava mix$
Term
Human impact
Definition
Lava flows over property, covered with ash, poisonous gases cause acid rain, fires from burning ash or hot lava
Term
What does vei stand for
Definition
Volcanic explosive index
Term
tephra
Definition
clumps of ash stuck together
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