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16 Cards in this Set
- Front
- Back
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October, 2004 |
When did Mount Saint Heles erupt last? |
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The Cascade Mountains of Washington State |
Where is Mt. St. Helens located? |
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Millions of tons |
How much magma was released during the eruption? |
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4 Miles below the volcano |
How far from the summit is Spirit Lake located? |
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57 |
How many people were killed by the eruption? |
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13 Miles |
How far away was the furthest victim? |
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Thousands of birds, billions of insects |
How many birds disappeared during this disaster? How many insects? |
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It was smothered by dead trees and other debris, it is now scarcely recognized It also lifted its bed |
What happened to Spirit Lake? Explain. |
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A gaping crater. A mile wide and 2000 feet deep |
Explain what the landscape in the region looked like after the eruption |
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A vast arc of volcanos running for thousands of miles |
What is the pacific ring of fire? |
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The immense plates of earth's crust were squeezed together. Pressure build up 60 miles down. |
Explain what has caused the volcano at Mt. St. Helens |
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They saw no living organisms. They saw dead trees, and ash. They then found a northern pocket gopher under recently disrupted earth. Life is returning |
What did ecologists find when they first came to the mountain after the eruption? |
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The gophers and the disrupted earth |
What were the first signs of life on the mountain? What did they see happening?
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Because it was the first sign of life when everything else had been completely extinguished. |
Why were the ecologists so surprised to see a flowering plant a year after the eruption |
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A special root structure that provides its own fertilizer and bacteria works with the plant and gives the plant nitrogen |
How did the plant manage to a barren area? Explain |
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The first species to arrive after an ecosystem is disrupted. They help nutrient poor organisms. |
What is a pioneering species? How do they help to revive the environment? Explain |
