Nova: Mt. St. Helens- Back From the Dead
1: When did Mt. St. Helens erupt last?
May 18, 1980 Mt. St. Helens erupt last.
2:Where is Mt. St. Helens located? Mount St. Helens is located in Skamania County, Washington, in the Pacific Northwest region of the United States.
3: How much magma is released during the eruption?
Millions of tons that magma was released during the eruption.
4: What is a pyroclastic flow?
A pyroclastic flow is a fluidized mixture of solid to semi-solid fragments and hot, expanding gases that flows down the flank of a volcanic edifice.
5: How far from the summit is Spirit Lake located?
4 miles from the summit is Spirit Lake location.
6: How many people were killed by the eruption?
57 people were killed by the eruption.
7: How far away was the furthest victim?
13 miles away the furthest victim.
8: How many birds disappeared during this disaster? How many insects?
Thousands of birds disappeared during the disaster. Billion of insects disappeared during the disaster too.
9: What happens to Spirit Lake? Explain.
The thing that happens to Spirit Lake is the surface was coverd in dead trees. Many species of aqautic are killed.
10: Explain what the landscape in this region looks like after the eruption. (End of Part I)
The landscape in this region look like after the eruption is the moon due to all of the ash and dust left everywhere.
11: What is the “Pacific Ring of Fire”?
The Pacific Ring of fire is a region of high volcanic and seismic activity that surrounds the majority of the Pacific Ocean Basin.
12: Explain what has caused the volcano at Mt. St. Helens.
The pressure of magma from within the mountain had been increasing over the years and the rock eventually gave way. With the blocking rock removed, huge amounts of hot rock, ash, and gas exploded from the opening with incredible force. The large magma chamber beneath Mount St. Helens will likely continue to force lava upward and cause future eruptions. However, as history indicates, they could be several hundred years apart.
13: What did the ecologist find when he first came to the mountain after the eruption?
The ecologist find when he first came to the mountain after the eruption are a sign of brown earth over the volcanic ash.
14: What were the first signs of life at the mountain? What did they see happening?
The first sign of life at the mountain was a gopher, digging out from underneath the ground.
15: Why were ecologists so surprised to see a flowering plant a year after the eruption? (End of Part II)
Ecologists so surprised to see a flowering plant a year after the eruption because the plant was flourishing in an area where every other form of life was extinguished
16: How has the plant managed to grow in such a barren area? Explain.
The plant managed to grow in such a barrren area are due to the plant's special roots. Their are bacterium, work with the plant providing nitrogen and the plant returns the bacterium with simple sugar it creates.
17: What is a pioneering species? How do they help out in a nutrient poor environment?
Pioneer species are hardy species which are the first to colonize previously disrupted or damaged ecosystems, beginning a chain of ecological succession that ultimately leads to a more biodiverse steady-state ecosystem.Since some uncolonized land may have thin, poor quality soils with few nutrients, pioneer species are often hardy plants with adaptations such as long roots, root nodes containing nitrogen-fixing bacteria, and leaves that employ transpiration.
18: What is causing earthquakes on Mt. St. Helens?
The eruption was caused by the Juan de fuca plate moving east, towards the north American plate. because the Juan de fuca is more dense, it is forced below the lighter North American plate. these movements cause friction, which then cause a rise in temperature, melts the earths crust. then, because the magma from the mantle is less dense than the recently melted north American plate, the magma rose to the surface and caused the mountain to bulge (by about 1.5 meters a day). the pressure became so great that the mountain exploded sideways.
19: Explain how the pioneering species are helping to revive the landscape.
The pioneering species are helping to revive the landscape are spreading across the landscape changing and modifying the land as they go.
20: What were scientists finding in Spirit Lake? Why was the dissolved oxygen levels so low? What was this causing?
The scientist finding in Spirit Lafe are a boom in bacteria. The dissolved oxygen levels so low because the bacteria were consuming all of the oxygen. This was causing the lake to be unable to support any other forms of life that required oxygen.
21: Explain how life in the lake is able to come back. What species is first (pioneering species)? How were they brought to the lake? (End of Part III)
The life in the lake is able to come back to the lake from phytoplankton who are the lake's first pioneering species. The species is first is they do not require oxygen so they do not need to compete with the bacteria. They are brought to the lake is as a result from being dropped by birds or being blown into the lake by the wind.
22: How are the salamanders able to survive in the harsh environment?
The salamanders able to survive in the harsh environment are gophers build tunnels of very long lengths. Elk were slowly returning to the area, and they collapsed the tunnels. The tunnels are then accessible for the salamanders as those tunnels are very cool and moist.
23: How was the rate of recovery on the mountain? Was it was scientists expected? (End of Part IV)
The rate of recovery on the mountain was much faster the what scientists expected.
24: Where does all of the explosive force in volcanoes come from? Where does the gas come
from? (End of Part V)
all of the explosive force in volcanoes come from are the magma. The gas come from water.
Discuss the miraculous return of nature to Mt. St. Helens years after the eruption. In your
discussion, use the following terms in your answer: succession, pioneer species, symbiosis
(mutualism), and nutrient cycling
May 18, 1980 Mt. St. Helens erupt last.Mount St. Helens is located in Skamania County, Washington, in the Pacific Northwest region of the United States. The process occurred use pioneer species it return. The succession are began to reborn again. The symbiosis and the nutrient cycling will help the pioneer species and animal return.The volcano ecosystem was able to succeed from the very help of the pioneer species present. The plants will grow and flourish due to symbiosis relationship between it and type of a bacteria.
1: When did Mt. St. Helens erupt last?
May 18, 1980 Mt. St. Helens erupt last.
2:Where is Mt. St. Helens located? Mount St. Helens is located in Skamania County, Washington, in the Pacific Northwest region of the United States.
3: How much magma is released during the eruption?
Millions of tons that magma was released during the eruption.
4: What is a pyroclastic flow?
A pyroclastic flow is a fluidized mixture of solid to semi-solid fragments and hot, expanding gases that flows down the flank of a volcanic edifice.
5: How far from the summit is Spirit Lake located?
4 miles from the summit is Spirit Lake location.
6: How many people were killed by the eruption?
57 people were killed by the eruption.
7: How far away was the furthest victim?
13 miles away the furthest victim.
8: How many birds disappeared during this disaster? How many insects?
Thousands of birds disappeared during the disaster. Billion of insects disappeared during the disaster too.
9: What happens to Spirit Lake? Explain.
The thing that happens to Spirit Lake is the surface was coverd in dead trees. Many species of aqautic are killed.
10: Explain what the landscape in this region looks like after the eruption. (End of Part I)
The landscape in this region look like after the eruption is the moon due to all of the ash and dust left everywhere.
11: What is the “Pacific Ring of Fire”?
The Pacific Ring of fire is a region of high volcanic and seismic activity that surrounds the majority of the Pacific Ocean Basin.
12: Explain what has caused the volcano at Mt. St. Helens.
The pressure of magma from within the mountain had been increasing over the years and the rock eventually gave way. With the blocking rock removed, huge amounts of hot rock, ash, and gas exploded from the opening with incredible force. The large magma chamber beneath Mount St. Helens will likely continue to force lava upward and cause future eruptions. However, as history indicates, they could be several hundred years apart.
13: What did the ecologist find when he first came to the mountain after the eruption?
The ecologist find when he first came to the mountain after the eruption are a sign of brown earth over the volcanic ash.
14: What were the first signs of life at the mountain? What did they see happening?
The first sign of life at the mountain was a gopher, digging out from underneath the ground.
15: Why were ecologists so surprised to see a flowering plant a year after the eruption? (End of Part II)
Ecologists so surprised to see a flowering plant a year after the eruption because the plant was flourishing in an area where every other form of life was extinguished
16: How has the plant managed to grow in such a barren area? Explain.
The plant managed to grow in such a barrren area are due to the plant's special roots. Their are bacterium, work with the plant providing nitrogen and the plant returns the bacterium with simple sugar it creates.
17: What is a pioneering species? How do they help out in a nutrient poor environment?
Pioneer species are hardy species which are the first to colonize previously disrupted or damaged ecosystems, beginning a chain of ecological succession that ultimately leads to a more biodiverse steady-state ecosystem.Since some uncolonized land may have thin, poor quality soils with few nutrients, pioneer species are often hardy plants with adaptations such as long roots, root nodes containing nitrogen-fixing bacteria, and leaves that employ transpiration.
18: What is causing earthquakes on Mt. St. Helens?
The eruption was caused by the Juan de fuca plate moving east, towards the north American plate. because the Juan de fuca is more dense, it is forced below the lighter North American plate. these movements cause friction, which then cause a rise in temperature, melts the earths crust. then, because the magma from the mantle is less dense than the recently melted north American plate, the magma rose to the surface and caused the mountain to bulge (by about 1.5 meters a day). the pressure became so great that the mountain exploded sideways.
19: Explain how the pioneering species are helping to revive the landscape.
The pioneering species are helping to revive the landscape are spreading across the landscape changing and modifying the land as they go.
20: What were scientists finding in Spirit Lake? Why was the dissolved oxygen levels so low? What was this causing?
The scientist finding in Spirit Lafe are a boom in bacteria. The dissolved oxygen levels so low because the bacteria were consuming all of the oxygen. This was causing the lake to be unable to support any other forms of life that required oxygen.
21: Explain how life in the lake is able to come back. What species is first (pioneering species)? How were they brought to the lake? (End of Part III)
The life in the lake is able to come back to the lake from phytoplankton who are the lake's first pioneering species. The species is first is they do not require oxygen so they do not need to compete with the bacteria. They are brought to the lake is as a result from being dropped by birds or being blown into the lake by the wind.
22: How are the salamanders able to survive in the harsh environment?
The salamanders able to survive in the harsh environment are gophers build tunnels of very long lengths. Elk were slowly returning to the area, and they collapsed the tunnels. The tunnels are then accessible for the salamanders as those tunnels are very cool and moist.
23: How was the rate of recovery on the mountain? Was it was scientists expected? (End of Part IV)
The rate of recovery on the mountain was much faster the what scientists expected.
24: Where does all of the explosive force in volcanoes come from? Where does the gas come
from? (End of Part V)
all of the explosive force in volcanoes come from are the magma. The gas come from water.
Discuss the miraculous return of nature to Mt. St. Helens years after the eruption. In your
discussion, use the following terms in your answer: succession, pioneer species, symbiosis
(mutualism), and nutrient cycling
May 18, 1980 Mt. St. Helens erupt last.Mount St. Helens is located in Skamania County, Washington, in the Pacific Northwest region of the United States. The process occurred use pioneer species it return. The succession are began to reborn again. The symbiosis and the nutrient cycling will help the pioneer species and animal return.The volcano ecosystem was able to succeed from the very help of the pioneer species present. The plants will grow and flourish due to symbiosis relationship between it and type of a bacteria.