Question 1

In August 1986,a gigantic volume of carbon dioxide gas belched forth from ____________ and swept down the adjacent valleys asphyxiating 1700 people.

Accepted Answer

A) Lake Nyos in Cameroon 
B) Crater Lake in Oregon 
C) Krakatau in Indonesia 
D) Pinatubo in the Philippines 
E) Vesuvius in Italy

Question 2

The radiocarbon process of documenting major eruption dates for volcanoes in the past 50,000 years or so is the same as that used to work out dates of major prehistoric earthquakes.

Accepted Answer

A) True 
 B)False

Question 3

Mt.Rainier,Washington,is number one on the danger list of many volcanologists because of ____________.

Accepted Answer

A) its great height 
B) its extensive glacial cap 
C) its frequent earthquakes 
D) its active hot-water spring systems,which have weakened the mountain internally 
E) All of the choices are correct.

Question 4

The most dangerous volcanoes tend to be in the same general plate tectonic settings as the largest earthquakes in the world.

Accepted Answer

A) True 
 B)False

Question 5

The jokulhaup that occurred in 1996 in Iceland _______________________.

Accepted Answer

A) melted part of the ice cap,releasing a flood that at its peak flowed as the second largest river in the world 
B) filled the harbor of Vestmannaeyjar with lava 
C) released poisonous gases that killed most of Iceland's cattle and sheep,leading to famine 
D) was triggered by a magnitude 6 earthquake 
E) produced a lahar that buried 5 small towns

Question 6

A genuine success story of advance warning before a large eruption occurred in the Philippines in 1991 before the climactic eruption of _________________.

Accepted Answer

A) Mt.Pinatubo 
B) Nevado Del Ruiz 
C) Mont Pelée 
D) Mt.Mayon 
E) Popocatepetyl

Question 7

Pyroclastic flows can travel across bodies of water.

Accepted Answer

A) True 
 B)False

Question 8

Magma at spreading centers is low-temperature,low-viscosity,and basaltic,with easy escape of gases,providing all the factors that promote the peaceful eruption of magma.

Accepted Answer

A) True 
 B)False

Question 9

In 1985,this volcano produced a minor eruption that melted part of a glacier near its summit,sending a lahar down its slopes and killing at least 22,000 people:

Accepted Answer

A) Vesuvius,Italy 
B) Mont Pelée,Martinique 
C) Mt.Mayon,Philippines 
D) Nevado Del Ruiz,Colombia 
E) Popocatepetyl,Mexico

Question 10

Violent causes of death from volcanic eruptions include _______________.

Accepted Answer

A) pyroclastic flows 
B) tsunami 
C) lahars 
D) poison gases 
E) All of the choices are correct.

Question 11

In 1883,this volcano exploded and the resulting tsunami killed 36,000 people on Java and Sumatra.

Accepted Answer

A) Tambora 
B) Pelée 
C) Santorini 
D) Toba 
E) Krakatau

Question 12

The eruption of Nevado del Ruiz in Columbia in 1985 dropped hot pyroclastic debris onto glaciers,resulting in lahars.

Accepted Answer

A) True 
 B)False

Question 13

Nuee ardente (French for glowing cloud)is another term used to describe a lava flow.

Accepted Answer

A) True 
 B)False

Question 14

During the summer of 1783,the greatest lava eruption of historic times poured forth at _________,accompanied by the release of an enormous volume of gases that enshrouded much of northern Europe in a "dry fog" or blue haze rich in SO2 (one of the visible components of today's urban smog).

Accepted Answer

A) Mont Blanc,France 
B) Vesuvius,Italy 
C) Stromboli,Italy 
D) Ararat,Turkey 
E) Laki,Iceland

Exam 7: Volcano Processes and Deadly Events

In August 1986,a gigantic volume of carbon dioxide gas belched forth from ____________ and swept down the adjacent valleys asphyxiating 1700 people.

The radiocarbon process of documenting major eruption dates for volcanoes in the past 50,000 years or so is the same as that used to work out dates of major prehistoric earthquakes.

Mt.Rainier,Washington,is number one on the danger list of many volcanologists because of ____________.

The most dangerous volcanoes tend to be in the same general plate tectonic settings as the largest earthquakes in the world.

The jokulhaup that occurred in 1996 in Iceland _______________________.

A genuine success story of advance warning before a large eruption occurred in the Philippines in 1991 before the climactic eruption of _________________.

Pyroclastic flows can travel across bodies of water.

Magma at spreading centers is low-temperature,low-viscosity,and basaltic,with easy escape of gases,providing all the factors that promote the peaceful eruption of magma.

In 1985,this volcano produced a minor eruption that melted part of a glacier near its summit,sending a lahar down its slopes and killing at least 22,000 people:

Violent causes of death from volcanic eruptions include _______________.

In 1883,this volcano exploded and the resulting tsunami killed 36,000 people on Java and Sumatra.

The eruption of Nevado del Ruiz in Columbia in 1985 dropped hot pyroclastic debris onto glaciers,resulting in lahars.

Nuee ardente (French for glowing cloud)is another term used to describe a lava flow.

During the summer of 1783,the greatest lava eruption of historic times poured forth at _________,accompanied by the release of an enormous volume of gases that enshrouded much of northern Europe in a "dry fog" or blue haze rich in SO₂ (one of the visible components of today's urban smog) .

Exam 7: Volcano Processes and Deadly Events

In August 1986,a gigantic volume of carbon dioxide gas belched forth from ____________ and swept down the adjacent valleys asphyxiating 1700 people.

The radiocarbon process of documenting major eruption dates for volcanoes in the past 50,000 years or so is the same as that used to work out dates of major prehistoric earthquakes.

Mt.Rainier,Washington,is number one on the danger list of many volcanologists because of ____________.

The most dangerous volcanoes tend to be in the same general plate tectonic settings as the largest earthquakes in the world.

The jokulhaup that occurred in 1996 in Iceland _______________________.

A genuine success story of advance warning before a large eruption occurred in the Philippines in 1991 before the climactic eruption of _________________.

Pyroclastic flows can travel across bodies of water.

Magma at spreading centers is low-temperature,low-viscosity,and basaltic,with easy escape of gases,providing all the factors that promote the peaceful eruption of magma.

In 1985,this volcano produced a minor eruption that melted part of a glacier near its summit,sending a lahar down its slopes and killing at least 22,000 people:

Violent causes of death from volcanic eruptions include _______________.

In 1883,this volcano exploded and the resulting tsunami killed 36,000 people on Java and Sumatra.

The eruption of Nevado del Ruiz in Columbia in 1985 dropped hot pyroclastic debris onto glaciers,resulting in lahars.

Nuee ardente (French for glowing cloud)is another term used to describe a lava flow.

During the summer of 1783,the greatest lava eruption of historic times poured forth at _________,accompanied by the release of an enormous volume of gases that enshrouded much of northern Europe in a "dry fog" or blue haze rich in SO2 (one of the visible components of today's urban smog) .

During the summer of 1783,the greatest lava eruption of historic times poured forth at _________,accompanied by the release of an enormous volume of gases that enshrouded much of northern Europe in a "dry fog" or blue haze rich in SO₂ (one of the visible components of today's urban smog) .