Question 1

Caldera-forming eruptions are the largest and most deadly types of eruptions.

Accepted Answer

A) True 
 B)False

Question 2

In 1986,hundreds of people were suffocated when carbon dioxide was released suddenly from Lake Nyos in Cameroon.Why was the gas deadliest in villages located in valleys?

Accepted Answer

Carbon dioxide gas is denser t

Question 3

Mid-ocean ridge volcanism results from melting asthenosphere.

Accepted Answer

A) True 
 B)False

Question 4

Approximately how many people live in close proximity to active volcanoes?

Accepted Answer

A)  1 million 
B)  5 million 
C)  50 million 
D)  500 million 
E)  1 billion 
A)  1 million 
B)  5 million 
C)  50 million 
D)  500 million 
E)  1 billion

Question 5

Which of the following is a volcano in Canada that has undergone post-glacial eruption?

Accepted Answer

A)  Mount Garibaldi 
B)  Mount Baker 
C)  Mount St. Helens 
D)  Mount Meager 
E)  None of the above; there are no post-glacial volcanoes in Canada. 
A)  Mount Garibaldi 
B)  Mount Baker 
C)  Mount St. Helens 
D)  Mount Meager 
E)  None of the above; there are no post-glacial volcanoes in Canada.

Question 6

The most abundant elements in magma are

Accepted Answer

A)  nickel and iron. 
B)  silicon and calcium. 
C)  iron and magnesium. 
D)  iron and silicon. 
E)  silicon and oxygen. 
A)  nickel and iron. 
B)  silicon and calcium. 
C)  iron and magnesium. 
D)  iron and silicon. 
E)  silicon and oxygen.

Question 7

Which of the following is NOT a natural service function of volcanoes?

Accepted Answer

A)  geothermal power 
B)  fertile volcanic soils 
C)  recreation 
D)  release of gases 
E)  creation of new land 
A)  geothermal power 
B)  fertile volcanic soils 
C)  recreation 
D)  release of gases 
E)  creation of new land

Question 8

How can monitoring hydrologic conditions at a volcano help in volcanic eruption forecasting?

Accepted Answer

Increased heat from the interi

Question 9

Explain how the presence of large glaciers on a volcano can increase the lahar hazard.

Accepted Answer

Heat from a volcanic eruption

Question 10

The most lethal volcanic phenomena (responsible for the most deaths)are

Accepted Answer

A)  lava flows. 
B)  lahars. 
C)  pyroclastic flows. 
D)  ash falls. 
E)  poisonous gasses. 
A)  lava flows. 
B)  lahars. 
C)  pyroclastic flows. 
D)  ash falls. 
E)  poisonous gasses.

Question 11

Describe environmental and property damage that can result from lava flows.

Accepted Answer

Lava flows can dam rivers,kill

Question 12

Of the following volcanic eruptions,which is considered to be the deadliest?

Accepted Answer

A)  Vesuvius, Italy - A.D. 79 
B)  Krakatoa, Indonesia - 1883 
C)  Mount St. Helens, United States - 1980 
D)  Mount Pinatubo, Philippines - 1991 
E)  Eyjafjallajokull, Iceland - 2010 
A)  Vesuvius, Italy - A.D. 79 
B)  Krakatoa, Indonesia - 1883 
C)  Mount St. Helens, United States - 1980 
D)  Mount Pinatubo, Philippines - 1991 
E)  Eyjafjallajokull, Iceland - 2010

Question 13

Volcanic calderas,which are dozens of kilometres across and produced by very rare,large eruptions are referred to as super volcanoes.

Accepted Answer

A) True 
 B)False

Question 14

Volcanic debris flows commonly caused by melting ice on the flanks of a volcano are called

Accepted Answer

A)  maars. 
B)  lahars. 
C)  jokulhlaups. 
D)  pyroclastic surges. 
E)  pyroclastic flows. 
A)  maars. 
B)  lahars. 
C)  jokulhlaups. 
D)  pyroclastic surges. 
E)  pyroclastic flows.

Question 15

Geothermal energy is a renewable resource that cannot be depleted until the volcano goes extinct.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is a stratovolcano in British Columbia?

Accepted Answer

A)  Mount Baker 
B)  Mauna Loa 
C)  Mount Vesuvius 
D)  Mount Garibaldi 
E)  Tambora 
A)  Mount Baker 
B)  Mauna Loa 
C)  Mount Vesuvius 
D)  Mount Garibaldi 
E)  Tambora

Question 17

Which of the following lava compositions would have the highest viscosity?

Accepted Answer

A)  basalt 
B)  rhyolite 
C)  dacite 
D)  andesite 
E)  rhyodacite 
A)  basalt 
B)  rhyolite 
C)  dacite 
D)  andesite 
E)  rhyodacite

Question 18

Which of the following volcanic hazards can occur without an accompanying eruption?

Accepted Answer

A)  lava flow 
B)  pyroclastic flow 
C)  sector collapse 
D)  volcanic bombs 
E)  volcanic ash cloud 
A)  lava flow 
B)  pyroclastic flow 
C)  sector collapse 
D)  volcanic bombs 
E)  volcanic ash cloud

Question 19

Describe the sequence of events at Mt.St.Helens on May 18,1980.

Accepted Answer

An earthquake triggered a mass

Question 20

What sort of magma is associated with shield volcanoes and how does this contribute to their shape?

Accepted Answer

Shield volcanoes are built up by numerou

Caldera-forming eruptions are the largest and most deadly types of eruptions.

In 1986,hundreds of people were suffocated when carbon dioxide was released suddenly from Lake Nyos in Cameroon.Why was the gas deadliest in villages located in valleys?

Mid-ocean ridge volcanism results from melting asthenosphere.

Approximately how many people live in close proximity to active volcanoes?

Which of the following is a volcano in Canada that has undergone post-glacial eruption?

The most abundant elements in magma are

Which of the following is NOT a natural service function of volcanoes?

How can monitoring hydrologic conditions at a volcano help in volcanic eruption forecasting?

Explain how the presence of large glaciers on a volcano can increase the lahar hazard.

The most lethal volcanic phenomena (responsible for the most deaths)are

Describe environmental and property damage that can result from lava flows.

Of the following volcanic eruptions,which is considered to be the deadliest?

Volcanic calderas,which are dozens of kilometres across and produced by very rare,large eruptions are referred to as super volcanoes.

Volcanic debris flows commonly caused by melting ice on the flanks of a volcano are called

Geothermal energy is a renewable resource that cannot be depleted until the volcano goes extinct.

Which of the following is a stratovolcano in British Columbia?

Which of the following lava compositions would have the highest viscosity?

Which of the following volcanic hazards can occur without an accompanying eruption?

Describe the sequence of events at Mt.St.Helens on May 18,1980.

What sort of magma is associated with shield volcanoes and how does this contribute to their shape?

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

Earthquakes

Tsunamis

Landslides

Snow Avalanches

Subsidence and Soil Expansion and Contraction

River Flooding

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Waves, Currents, and Coastlines

Wildfires

Climate Change

Meteorite Impacts and Extinctions

Filters

Exam 5: Volcanoes and Volcanic Eruptions

Caldera-forming eruptions are the largest and most deadly types of eruptions.

In 1986,hundreds of people were suffocated when carbon dioxide was released suddenly from Lake Nyos in Cameroon.Why was the gas deadliest in villages located in valleys?

Mid-ocean ridge volcanism results from melting asthenosphere.

Approximately how many people live in close proximity to active volcanoes?

Which of the following is a volcano in Canada that has undergone post-glacial eruption?

The most abundant elements in magma are

Which of the following is NOT a natural service function of volcanoes?

How can monitoring hydrologic conditions at a volcano help in volcanic eruption forecasting?

Explain how the presence of large glaciers on a volcano can increase the lahar hazard.

The most lethal volcanic phenomena (responsible for the most deaths)are

Describe environmental and property damage that can result from lava flows.

Of the following volcanic eruptions,which is considered to be the deadliest?

Volcanic calderas,which are dozens of kilometres across and produced by very rare,large eruptions are referred to as super volcanoes.

Volcanic debris flows commonly caused by melting ice on the flanks of a volcano are called

Geothermal energy is a renewable resource that cannot be depleted until the volcano goes extinct.

Which of the following is a stratovolcano in British Columbia?

Which of the following lava compositions would have the highest viscosity?

Which of the following volcanic hazards can occur without an accompanying eruption?

Describe the sequence of events at Mt.St.Helens on May 18,1980.

What sort of magma is associated with shield volcanoes and how does this contribute to their shape?

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

Earthquakes

Tsunamis

Landslides

Snow Avalanches

Subsidence and Soil Expansion and Contraction

River Flooding

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Waves, Currents, and Coastlines

Wildfires

Climate Change

Meteorite Impacts and Extinctions

Filters