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8 Cards in this Set
- Front
- Back
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What is an active volcano?
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One that is erupting, or shows signs of erupting in the near future.
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What is a dormant volcano?
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One that scientists predict to awaken and become active in the near future. Can become active at anytime.
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What is an extinct volcano?
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One that is dead and is no longer active. Unlikely to erupt ever again.
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What is a cinder cone volcano?
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-violent eruption
-throws out solids (ash,bombs,cinder) -materials build around a vent in a cone-shaped hill called a cinder cone -example:Parictuin in Mexico (1943) on farmers field |
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What is a composite volcano? (stratovolcano)
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-alternates from violent and quiet eruptions
-tall cone shaped mountains -layers of lava alternate with layers of ash -examples: Mt. Fuji,Japan; Mt. St. Helens, Washington |
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What is a shield volcano?
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-quiet eruptions
-flat like a shield -build up a wide gently sloping moutain -thin layers of lava pour out of vent and harden ontop of other layers examples:Hawaiian Islands: Mouna Loa, Kilauea, Hawaii |
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What is the ring of Fire?
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-made by subduction:convergent boundary
-along the Pacific Plate that moves the Pacific ocean -formed by many volcanoes and earthquakes that rim the Pacific Ocean -examples: Chile,... |
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How did the Hawaiian Islands form?
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-fomed as pacific plate drifted over a hot spot (area of magma from deep within the mantle rises and then melts)
-magma has no where to go but up and forms volcanoes -Hawaii is in middle of Pacific Ocean -Oldest H.I. is Kaui b/c farthest away from hot-spot -youngest H.I. is Hawaii b/c closest to hot-spot -Pacific plate moves northwest |
