Question 1

Why would a volcanic eruption at Mount Vesuvius pose a huge hazard?

Accepted Answer

700,000 people live near Mount Vesuvius,

Question 2

Describe the process that created Crater Lake and how this differs from what geologists originally thought occurred.What evidence supports this conclusion?

Accepted Answer

As Mount Mazama erupted,the peak sank in

Question 3

What is Wizard Island in Crater Lake?

Accepted Answer

A new volcano that g

Question 4

What is a surge?

Accepted Answer

A)  a tremendous earthquake 
B)  a type of volcano 
C)  a high speed, violent ash-rich shock wave 
D)  an underground magma flow 
E)  a mixture of hot volcanic ash and steam that rushes down the volcano's slope 
A)  a tremendous earthquake 
B)  a type of volcano 
C)  a high speed, violent ash-rich shock wave 
D)  an underground magma flow 
E)  a mixture of hot volcanic ash and steam that rushes down the volcano's slope

Question 5

What is tuff?

Accepted Answer

A)  ash after deposition forms a rock 
B)  ash hardened from ash flow 
C)  broken and hardened magma 
D)  frothy rock light enough to float 
E)  pillow shaped lava fragments 
A)  ash after deposition forms a rock 
B)  ash hardened from ash flow 
C)  broken and hardened magma 
D)  frothy rock light enough to float 
E)  pillow shaped lava fragments

Question 6

What are some strategies used to mitigate damage from volcanoes?

Accepted Answer

Controlling lava flows with ba

Question 7

Which of the following is "the largest,highest,and most spectacular volcano in the main line of the High Cascades"?

Accepted Answer

A)  Mount St. Helens 
B)  Mount Hood 
C)  Mount Shasta 
D)  Mount Rainier 
E)  Mount Mazama 
A)  Mount St. Helens 
B)  Mount Hood 
C)  Mount Shasta 
D)  Mount Rainier 
E)  Mount Mazama

Question 8

What is the term describing the process of gases coming out of solution,when the pressure drops and magma rises?

Accepted Answer

A)  expire 
B)  vog 
C)  lahar 
D)  exsolve 
E)  absorption 
A)  expire 
B)  vog 
C)  lahar 
D)  exsolve 
E)  absorption

Question 9

What are harmonic tremors?

Accepted Answer

A)  a variation of a surge 
B)  volcanic eruptions 
C)  a type of lava flow 
D)  a rare mountain building event 
E)  a low-frequency rolling ground movement 
A)  a variation of a surge 
B)  volcanic eruptions 
C)  a type of lava flow 
D)  a rare mountain building event 
E)  a low-frequency rolling ground movement

Question 10

Where were the first tiltmeters installed in the 1920s?

Accepted Answer

A)  Mount Vesuvius, Italy 
B)  Mount St. Helens 
C)  Yellowstone, Wyoming 
D)  Kilauea, Hawaii 
E)  Santorini, Greece 
A)  Mount Vesuvius, Italy 
B)  Mount St. Helens 
C)  Yellowstone, Wyoming 
D)  Kilauea, Hawaii 
E)  Santorini, Greece

Question 11

What evidence is NOT used by scientists to decide whether a stratovolcano may be getting ready to erupt?

Accepted Answer

A)  whether there are changes in the temperatures of volcanoes and erupted steam 
B)  whether numerous microearthquakes are occurring 
C)  whether a large bulge is growing on the flank of the volcano 
D)  whether there is an increase in sulfur oxide gas emissions from the volcano 
E)  whether red-hot molten magma is visible when looking down the crater 
A)  whether there are changes in the temperatures of volcanoes and erupted steam 
B)  whether numerous microearthquakes are occurring 
C)  whether a large bulge is growing on the flank of the volcano 
D)  whether there is an increase in sulfur oxide gas emissions from the volcano 
E)  whether red-hot molten magma is visible when looking down the crater

Question 12

The first tiltmeters were simple levels made with water tubes __________ long.

Accepted Answer

A)  25 feet 
B)  25 yards 
C)  5 meters 
D)  50 meters 
E)  25 meters 
A)  25 feet 
B)  25 yards 
C)  5 meters 
D)  50 meters 
E)  25 meters

Question 13

Harmonic tremors recorded on seismographs near volcanoes are generally interpreted as __________.

Accepted Answer

The answer of Harmonic tremors recorded on seismographs near volcanoes...

Question 14

What signs suggest that a volcano may be getting ready to erupt?

Accepted Answer

Numerous small earthquakes,har

Question 15

In contrast to an old ash-flow deposit,an old ash-fall tuff does NOT include which of the following?

Accepted Answer

A)  thin layers 
B)  layers that become coarser-grained toward the base 
C)  ash that evenly coats hills and valleys 
D)  ash that is never welded to black obsidian 
E)  differences in thickness based on valleys and hills 
A)  thin layers 
B)  layers that become coarser-grained toward the base 
C)  ash that evenly coats hills and valleys 
D)  ash that is never welded to black obsidian 
E)  differences in thickness based on valleys and hills

Why would a volcanic eruption at Mount Vesuvius pose a huge hazard?

Describe the process that created Crater Lake and how this differs from what geologists originally thought occurred.What evidence supports this conclusion?

What is Wizard Island in Crater Lake?

What is a surge?

What is tuff?

What are some strategies used to mitigate damage from volcanoes?

Which of the following is "the largest,highest,and most spectacular volcano in the main line of the High Cascades"?

What is the term describing the process of gases coming out of solution,when the pressure drops and magma rises?

What are harmonic tremors?

Where were the first tiltmeters installed in the 1920s?

What evidence is NOT used by scientists to decide whether a stratovolcano may be getting ready to erupt?

The first tiltmeters were simple levels made with water tubes __________ long.

Harmonic tremors recorded on seismographs near volcanoes are generally interpreted as __________.

What signs suggest that a volcano may be getting ready to erupt?

In contrast to an old ash-flow deposit,an old ash-fall tuff does NOT include which of the following?

Natural Hazards and Disasters

Plate Tectonics and Physical Hazards

Earthquakes and Their Causes

Earthquake Prediction and Mitigation

Tsunami

Volcanoes: Tectonic Environments and Eruptions

Landslides and Other Downslope Movements

Sinkholes, Land Subsidence, and Swelling Soils

Weather, Thunderstorms, And Tornadoes

Climate Change

Streams And Flood Processes

Floods And Human Interactions

Waves,Beaches,And Coastal Erosion

Hurricanes and Nor’easters

Wildfires

Impact of Asteroids and Comets

The Future: Where Do We Go From Here?

Filters

Exam 7: Volcanoes: Hazards and Mitigation

Why would a volcanic eruption at Mount Vesuvius pose a huge hazard?

Describe the process that created Crater Lake and how this differs from what geologists originally thought occurred.What evidence supports this conclusion?

What is Wizard Island in Crater Lake?

What is a surge?

What is tuff?

What are some strategies used to mitigate damage from volcanoes?

Which of the following is "the largest,highest,and most spectacular volcano in the main line of the High Cascades"?

What is the term describing the process of gases coming out of solution,when the pressure drops and magma rises?

What are harmonic tremors?

Where were the first tiltmeters installed in the 1920s?

What evidence is NOT used by scientists to decide whether a stratovolcano may be getting ready to erupt?

The first tiltmeters were simple levels made with water tubes __________ long.

Harmonic tremors recorded on seismographs near volcanoes are generally interpreted as __________.

What signs suggest that a volcano may be getting ready to erupt?

In contrast to an old ash-flow deposit,an old ash-fall tuff does NOT include which of the following?

Natural Hazards and Disasters

Plate Tectonics and Physical Hazards

Earthquakes and Their Causes

Earthquake Prediction and Mitigation

Tsunami

Volcanoes: Tectonic Environments and Eruptions

Landslides and Other Downslope Movements

Sinkholes, Land Subsidence, and Swelling Soils

Weather, Thunderstorms, And Tornadoes

Climate Change

Streams And Flood Processes

Floods And Human Interactions

Waves,Beaches,And Coastal Erosion

Hurricanes and Nor’easters

Wildfires

Impact of Asteroids and Comets

The Future: Where Do We Go From Here?

Filters