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12 Cards in this Set
- Front
- Back
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Destructive Plate Margin |
two plates moving towards each other - along east coast of Japan oceanic meets continental, denser oceanic forced into mantle & destroyed. creates volcano, ocean trench |
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Constructive Plate Margin |
two plates moving away each other - mid-Atlantic ridge magma rises from mantle, fills gap & cools, creating new crust |
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Conservative Plate Margin |
two plates moving sideways past each other or same direction but different speeds - west coast USA crust nor created or destroyed |
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Composite Volcano |
made of ash, lava that's erupted cooled & hardened into layers lava = thick, flows slowly. hardens quick, form steep-sided volcano Mount Fuji Japan |
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Shield Volcano |
made of only lava lava = runny, flows quickly, spreads over wide area forms low, flat volcano Mauna Loa Hawaiian Islands |
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Dome Volcano |
made of only lava lava = thick, flows slowly, hardens quickly forming steep-sided volcano Mount Pelee in Caribbean |
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Scientists predicting volcanic eruptions in advance |
monitor signs that come before an eruption - tint earthquakes, escaping gas, changes in the shape of the volcano (bulges in land where magma has built up) |
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Volcanic Eruption: Mt St Helens |
1980, Juan de Fuca plate and North American plate - destructive margin |
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Volcanic Eruption: Mt St Helens Primary Effects |
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Volcanic Eruption: Mt St Helens Secondary Effects |
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Volcanic Eruption: Mt St Helens Immediate Responses |
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Volcanic Eruption: Mt St Helens Long Term Responses |
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