Term
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Definition
| An opening in the earth’s crust that erupts gases, ash, and lava |
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Definition
| Opening where magma escapes |
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Term
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Definition
| Steep-sided depression inside a volcano |
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Term
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Definition
| Divergent boundaries- i.e. Iceland |
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Term
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Definition
| Convergent boundaries- Most common- “ring of fire”- Pacific rim. Where most volcanoes occur. |
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Definition
| Hot spots- Weak spot in the crust- i.e. Hawaiian islands |
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Term
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Definition
Amount of dissolved gases & water vapor
-more gases, more explosive
-More trapped water at convergent boundaries (from ocean) |
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Definition
Amount of silica (“glue”)
-More silica, more explosive |
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Term
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Definition
| Shield volcano- Gentle slope (mostly lava) |
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Term
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Definition
Cinder cone- Steep slope (mostly ash)
-Tephra- Clumps of airborne ash |
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Definition
| Composite cone- Intermediate slope (ash & lava mix) |
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Term
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Definition
1. Lava flows cover properly (Hawaii)
2.Covered with ash (Pompeii, Italy)
3.Poisonous gases cause acid rain
4.Fires from burning ash or hot lava (Hawaii) |
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Term
| True or False: Vents are openings where magma escaped |
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Definition
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Term
| True or False: The crater is a steep-sided depression inside a volcano |
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Definition
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Term
| What does V.E.I stand for? |
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Definition
| Volcanic Explosivity Index |
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Term
| What was the largest volcanic eruption of historic times (recorded by man)? |
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Definition
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Term
| What was the volcano that buried Pompeii? |
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Definition
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Term
| What were the people buried in- lava or ash? |
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Definition
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Term
| Between 1600 and 1982, where in the world have the most people died as the result of volcanoes? |
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Definition
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Term
| What is the largest volcano in the world? |
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Definition
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| What was the most destructive volcano in U.S. history? |
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Definition
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