Question 1

Which of the following volcanic gases emitted during the 1992 eruption of Mount Pinatubo increased the rate of ozone loss in the atmosphere?

Accepted Answer

A) carbon dioxide 
B) chlorine 
C) sulfur dioxide 
D) water vapor 
A) carbon dioxide 
B) chlorine 
C) sulfur dioxide 
D) water vapor

Question 2

Find the correct volcano/volcanic product match.

Accepted Answer

A) dome/basalt 
B) shield volcano/rhyolite 
C) fissure/basalt 
D) shield volcano/andesite 
A) dome/basalt 
B) shield volcano/rhyolite 
C) fissure/basalt 
D) shield volcano/andesite

Question 3

How long does it take to recycle the entire volume of the ocean through the mid-ocean ridges?

Accepted Answer

A) 10 days 
B) 10 years 
C) 10 million years 
D) 10 billion years 
A) 10 days 
B) 10 years 
C) 10 million years 
D) 10 billion years

Question 4

Which of the following states has the most active volcanoes?

Accepted Answer

A) Alaska 
B) Florida 
C) New York 
D) Texas 
A) Alaska 
B) Florida 
C) New York 
D) Texas

Question 5

Which of the following volcanoes is a composite volcano (stratovolcano)?

Accepted Answer

A) Mauna Loa,Hawaii 
B) Shiprock,New Mexico 
C) Mount Rainier,Washington 
D) Yellowstone,Wyoming 
A) Mauna Loa,Hawaii 
B) Shiprock,New Mexico 
C) Mount Rainier,Washington 
D) Yellowstone,Wyoming

Question 6

Which of the following rocks is formed from volcanic ash?

Accepted Answer

A) aa 
B) breccia 
C) pahoehoe 
D) tuff 
A) aa 
B) breccia 
C) pahoehoe 
D) tuff

Question 7

Which of the following volcanic deposits is most likely to form from a mafic lava?

Accepted Answer

A) flood basalt 
B) pahoehoe 
C) shield volcano 
D) all of the above 
A) flood basalt 
B) pahoehoe 
C) shield volcano 
D) all of the above

Question 8

Shiprock,New Mexico,is an example of a

Accepted Answer

A) caldera. 
B) cinder cone. 
C) diatreme. 
D) lava flow. 
A) caldera. 
B) cinder cone. 
C) diatreme. 
D) lava flow.

Question 9

Where are aseismic ridges located?

Accepted Answer

A) convergent plate boundaries 
B) transform plate boundaries 
C) divergent plate boundaries 
D) intraplate regions 
A) convergent plate boundaries 
B) transform plate boundaries 
C) divergent plate boundaries 
D) intraplate regions

Question 10

An eruption of lava that pours out of vertical cracks along the flank of a volcano is referred to as a

Accepted Answer

A) central eruption. 
B) phreatic eruption. 
C) lateral eruption. 
D) fissure eruption. 
A) central eruption. 
B) phreatic eruption. 
C) lateral eruption. 
D) fissure eruption.

Question 11

Approximately how much basaltic lava is erupted each year at mid-ocean ridges?

Accepted Answer

A) 3 cubic kilometers 
B) 300 cubic kilometers 
C) 30 cubic kilometers 
D) 3000 cubic kilometers 
A) 3 cubic kilometers 
B) 300 cubic kilometers 
C) 30 cubic kilometers 
D) 3000 cubic kilometers

Question 12

Approximately how many active volcanoes are there on Earth?

Accepted Answer

A) 50 
B) 500 
C) 5000 
D) 50,000 
A) 50 
B) 500 
C) 5000 
D) 50,000

Question 13

Most of the world's active volcanoes are located around the edge of which ocean?

Accepted Answer

A) the Arctic Ocean 
B) the Atlantic Ocean 
C) the Indian Ocean 
D) the Pacific Ocean 
A) the Arctic Ocean 
B) the Atlantic Ocean 
C) the Indian Ocean 
D) the Pacific Ocean

Question 14

How can volcanic eruptions endanger commercial air traffic?

Accepted Answer

A) Airplanes can get struck by large volcanic bombs. 
B) Volcanic ash lofted into the air can damage engines. 
C) Large plumes of volcanic gas can cause an airplane to lose lift. 
D) Clouds of volcanic ash can reduce visibility. 
A) Airplanes can get struck by large volcanic bombs. 
B) Volcanic ash lofted into the air can damage engines. 
C) Large plumes of volcanic gas can cause an airplane to lose lift. 
D) Clouds of volcanic ash can reduce visibility.

Question 15

Kimperlite pipes contain material that may have come from mantle as deep as

Accepted Answer

A) 100 km. 
B) 200 km. 
C) 1000 km. 
D) 3000 km. 
A) 100 km. 
B) 200 km. 
C) 1000 km. 
D) 3000 km.

Question 16

So called Large Igneous Provinces are thought be the result of ________ volcanism?

Accepted Answer

A) divergent boundary 
B) convergent boundary 
C) transform boundary 
D) intra-plate superplume 
A) divergent boundary 
B) convergent boundary 
C) transform boundary 
D) intra-plate superplume

Question 17

What sort of volcano was formed during the Laki eruption in Iceland in 1783?

Accepted Answer

A) stratovolcano 
B) under-water volcano 
C) fissure 
D) shield volcano 
A) stratovolcano 
B) under-water volcano 
C) fissure 
D) shield volcano

Question 18

Large igneous provinces (LIPs)produce

Accepted Answer

A) large volumes of felsic extrusive rock. 
B) large volumes of volcanic tuffs and breccias. 
C) large volumes of mafic and intermediate extrusive rock. 
D) large volumes of mafic extrusive and intrusive rocks. 
A) large volumes of felsic extrusive rock. 
B) large volumes of volcanic tuffs and breccias. 
C) large volumes of mafic and intermediate extrusive rock. 
D) large volumes of mafic extrusive and intrusive rocks.

Question 19

Which of the following lavas will flow downhill slowest?

Accepted Answer

A) andesite 
B) basalt 
C) rhyolite 
D) Andesite,basalt,and rhyolite lavas all flow at approximately the same speed. 
A) andesite 
B) basalt 
C) rhyolite 
D) Andesite,basalt,and rhyolite lavas all flow at approximately the same speed.

Question 20

Roughly ______ people live in areas adjacent to active volcanoes.

Accepted Answer

A) 100,000 
B) 10 million 
C) 600 million 
D) 2 billion 
A) 100,000 
B) 10 million 
C) 600 million 
D) 2 billion

Exam 12: Volcanoes

Which of the following volcanic gases emitted during the 1992 eruption of Mount Pinatubo increased the rate of ozone loss in the atmosphere?

Find the correct volcano/volcanic product match.

How long does it take to recycle the entire volume of the ocean through the mid-ocean ridges?

Which of the following states has the most active volcanoes?

Which of the following volcanoes is a composite volcano (stratovolcano)?

Which of the following rocks is formed from volcanic ash?

Which of the following volcanic deposits is most likely to form from a mafic lava?

Shiprock,New Mexico,is an example of a

Where are aseismic ridges located?

An eruption of lava that pours out of vertical cracks along the flank of a volcano is referred to as a

Approximately how much basaltic lava is erupted each year at mid-ocean ridges?

Approximately how many active volcanoes are there on Earth?

Most of the world's active volcanoes are located around the edge of which ocean?

How can volcanic eruptions endanger commercial air traffic?

Kimperlite pipes contain material that may have come from mantle as deep as

So called Large Igneous Provinces are thought be the result of ________ volcanism?

What sort of volcano was formed during the Laki eruption in Iceland in 1783?

Large igneous provinces (LIPs)produce

Which of the following lavas will flow downhill slowest?

Roughly ______ people live in areas adjacent to active volcanoes.

The Earth System

Plate Tectonics: The Unifying Theory

Earth Materials: Minerals and Rocks

Igneous Rocks: Solids From Melts

Sedimentation: Rocks Formed by Surface Processes

Metamorphism: Alteration of Rocks by Temperature and Pressure

Deformation: Modification of Rocks by Folding and Fracturing

Clocks in Rocks: Timing the Geologic Period

Early History of the Terrestrial Planets

History of the Continents

Geobiology: Life Interacts With Earth

Earthquakes

Exploring Earths Interior

The Climate System

Weathering,erosion,and Mass Wasting: Interactions Between the Climate and Plate Tectonic Systems

The Hydrologic Cycle and Groundwater

Stream Transport: From Mountains to Oceans

Winds and Deserts

Coastlines and Ocean Basins

Glaciers: the Work of Ice

Landscapes: Tectonic and Climate Interaction

The Human Impact of Earths Environment

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