Question 1

This relatively large,symmetrical volcano contains interlayered lava flow,pyroclastic deposits,and volcanic mudflows.What kind of volcano is it?

Accepted Answer

A) Cinder cone 
B) Shield volcano 
C) Composite volcano 
D) Volcanic dome 
E) Caldera 
A) Cinder cone 
B) Shield volcano 
C) Composite volcano 
D) Volcanic dome 
E) Caldera

Question 2

Which of the following is a valid statement about how rocks respond to stress?

Accepted Answer

A) If the stress is very high,the rock will be unchanged. 
B) Stress can cause a rock to be displaced,but not rotated. 
C) If a rock has strained,then it has changed its size or shape. 
D) A rock can be displaced or strained but not both at the same time. 
A) If the stress is very high,the rock will be unchanged. 
B) Stress can cause a rock to be displaced,but not rotated. 
C) If a rock has strained,then it has changed its size or shape. 
D) A rock can be displaced or strained but not both at the same time.

Question 3

The type of volcanic eruption shown in this photograph is

Accepted Answer

A) a lava fountain. 
B) collapse of a volcanic dome. 
C) a fissure eruption. 
D) a pyroclastic column. 
E) a volcanic mudflow. 
A) a lava fountain. 
B) collapse of a volcanic dome. 
C) a fissure eruption. 
D) a pyroclastic column. 
E) a volcanic mudflow.

Question 4

Which of the following are differences between an eruption column and pyroclastic flow?

Accepted Answer

A) Tephra in an eruption column stays hotter until it reaches the ground. 
B) A pyroclastic flow rises higher into the atmosphere than an eruption column. 
C) Damage from an eruption column is more restricted than a pyroclastic flow. 
D) A pyroclastic flow forms when the gas flux cannot support the column. 
A) Tephra in an eruption column stays hotter until it reaches the ground. 
B) A pyroclastic flow rises higher into the atmosphere than an eruption column. 
C) Damage from an eruption column is more restricted than a pyroclastic flow. 
D) A pyroclastic flow forms when the gas flux cannot support the column.

Question 5

A volcanic eruption occurring beneath an ice sheet is likely to cause

Accepted Answer

A) a hazardous flood. 
B) enormous flows. 
C) lengthy lava flows. 
A) a hazardous flood. 
B) enormous flows. 
C) lengthy lava flows.

Question 6

What type of stress could form the fault in this figure?

Accepted Answer

A) Confining pressure 
B) Horizontal tension 
C) Horizontal compression 
D) Horizontal pushing 
E) Any of these is correct. 
A) Confining pressure 
B) Horizontal tension 
C) Horizontal compression 
D) Horizontal pushing 
E) Any of these is correct.

Question 7

Which of the following sites has volcanism related to a hot spot or divergent margin? A is on an island arc,B is in the Andes,C is near Hawaii,D is along a midocean ridge.

Accepted Answer

A) A and B 
B) B and C 
C) C and D 
D) A and C 
E) B and D 
A) A and B 
B) B and C 
C) C and D 
D) A and C 
E) B and D

Question 8

A broad and low volcano composed of basaltic lava flows is likely to be a

Accepted Answer

A) cinder cone. 
B) shield volcano. 
C) composite volcano. 
D) volcanic dome. 
E) caldera. 
A) cinder cone. 
B) shield volcano. 
C) composite volcano. 
D) volcanic dome. 
E) caldera.

Question 9

Which of the following types of volcanic eruption have occurred on Mount St.Helens since it began erupting in 1980?

Accepted Answer

A) Eruption column 
B) Pyroclastic flow 
C) Volcanic dome 
D) All of these are correct. 
A) Eruption column 
B) Pyroclastic flow 
C) Volcanic dome 
D) All of these are correct.

Question 10

Which of the following is not a hazard typically associated with cinder cones?

Accepted Answer

A) Bulldozing of houses from their foundations 
B) Air quality reduction by ash and volcanic gases 
C) Falling volcanic bombs and cinders 
A) Bulldozing of houses from their foundations 
B) Air quality reduction by ash and volcanic gases 
C) Falling volcanic bombs and cinders

Question 11

This volcano is broad and low,and is composed of basaltic lava flows.What kind of volcano is it?

Accepted Answer

A) Cinder cone 
B) Shield volcano 
C) Composite volcano 
D) Volcanic dome 
E) Caldera 
A) Cinder cone 
B) Shield volcano 
C) Composite volcano 
D) Volcanic dome 
E) Caldera

Question 12

Which of the following is not a major controlling factor on volcanic eruption style?

Accepted Answer

A) Age of volcano 
B) Chemistry of the magma 
C) Magma volatile content 
A) Age of volcano 
B) Chemistry of the magma 
C) Magma volatile content

Question 13

Which of the following is the best indicator that a volcano might be very dangerous?

Accepted Answer

A) Gentle slopes that signify fast-flowing lavas 
B) Rock analyses that indicate a low content of silica 
C) A volcano that contains andesite and welded tuffs 
D) Analysis that indicate the volcano last erupted 10 million years ago 
A) Gentle slopes that signify fast-flowing lavas 
B) Rock analyses that indicate a low content of silica 
C) A volcano that contains andesite and welded tuffs 
D) Analysis that indicate the volcano last erupted 10 million years ago

Question 14

When lava flows reach the ocean,they

Accepted Answer

A) solidify and add land to an island. 
B) explode and produce layers of ash. 
C) form tubes and continue flowing down to the deepest seafloor. 
A) solidify and add land to an island. 
B) explode and produce layers of ash. 
C) form tubes and continue flowing down to the deepest seafloor.

Question 15

What event triggered the main eruption of Mount St.Helens in May 1980?

Accepted Answer

A) Melting snow caused a huge steam eruption. 
B) Magma encountered groundwater and exploded. 
C) A landslide removed rocks and released pressure on the magma. 
D) All of these are correct. 
A) Melting snow caused a huge steam eruption. 
B) Magma encountered groundwater and exploded. 
C) A landslide removed rocks and released pressure on the magma. 
D) All of these are correct.

Question 16

Some scientists think that Yellowstone could cause a future disaster because

Accepted Answer

A) the area is part of a caldera. 
B) magma is still present at depth. 
C) past eruptions from Yellowstone carried ash over a huge area of western North America. 
D) land near Yellowstone is uplifting in some places and subsiding in others. 
E) All of these are correct. 
A) the area is part of a caldera. 
B) magma is still present at depth. 
C) past eruptions from Yellowstone carried ash over a huge area of western North America. 
D) land near Yellowstone is uplifting in some places and subsiding in others. 
E) All of these are correct.

Question 17

Which of the following is not a characteristic of an actively erupting volcano?

Accepted Answer

A) Totally covered in a fresh blanket of clean,white snow 
B) Billowing ash column rising into the sky 
C) Glowing lava flows moving down mountain slopes 
D) Rapidly melting glaciers/snowpack producing massive mudflows 
A) Totally covered in a fresh blanket of clean,white snow 
B) Billowing ash column rising into the sky 
C) Glowing lava flows moving down mountain slopes 
D) Rapidly melting glaciers/snowpack producing massive mudflows

Question 18

Where do most earthquakes occur near midocean ridges?

Accepted Answer

A) At great depths (more than 100 km) 
B) Along the axis of the ridge and on transform faults that connect ridge segments 
C) In the asthenosphere where mantle undergoes decompression melting 
D) On the boundary between the mantle and the oceanic crust 
E) All of these are correct. 
A) At great depths (more than 100 km) 
B) Along the axis of the ridge and on transform faults that connect ridge segments 
C) In the asthenosphere where mantle undergoes decompression melting 
D) On the boundary between the mantle and the oceanic crust 
E) All of these are correct.

Question 19

The most common volcanic rock found in lava flows on composite volcanoes is

Accepted Answer

A) andesite. 
B) basalt. 
C) obsidian. 
A) andesite. 
B) basalt. 
C) obsidian.

Question 20

What type of deformation is shown in this photograph?

Accepted Answer

A) Displacement 
B) Rotation 
C) Internal strain of the rock 
D) Columnar joints 
A) Displacement 
B) Rotation 
C) Internal strain of the rock 
D) Columnar joints

This relatively large,symmetrical volcano contains interlayered lava flow,pyroclastic deposits,and volcanic mudflows.What kind of volcano is it?

Which of the following is a valid statement about how rocks respond to stress?

The type of volcanic eruption shown in this photograph is

Which of the following are differences between an eruption column and pyroclastic flow?

A volcanic eruption occurring beneath an ice sheet is likely to cause

What type of stress could form the fault in this figure?

Which of the following sites has volcanism related to a hot spot or divergent margin? A is on an island arc,B is in the Andes,C is near Hawaii,D is along a midocean ridge.

A broad and low volcano composed of basaltic lava flows is likely to be a

Which of the following types of volcanic eruption have occurred on Mount St.Helens since it began erupting in 1980?

Which of the following is not a hazard typically associated with cinder cones?

This volcano is broad and low,and is composed of basaltic lava flows.What kind of volcano is it?

Which of the following is not a major controlling factor on volcanic eruption style?

Which of the following is the best indicator that a volcano might be very dangerous?

When lava flows reach the ocean,they

What event triggered the main eruption of Mount St.Helens in May 1980?

Some scientists think that Yellowstone could cause a future disaster because

Which of the following is not a characteristic of an actively erupting volcano?

Where do most earthquakes occur near midocean ridges?

The most common volcanic rock found in lava flows on composite volcanoes is

What type of deformation is shown in this photograph?

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Exam 11: Volcanoes,deformation,and Earthquakes

This relatively large,symmetrical volcano contains interlayered lava flow,pyroclastic deposits,and volcanic mudflows.What kind of volcano is it?

Which of the following is a valid statement about how rocks respond to stress?

The type of volcanic eruption shown in this photograph is

Which of the following are differences between an eruption column and pyroclastic flow?

A volcanic eruption occurring beneath an ice sheet is likely to cause

What type of stress could form the fault in this figure?

Which of the following sites has volcanism related to a hot spot or divergent margin? A is on an island arc,B is in the Andes,C is near Hawaii,D is along a midocean ridge.

A broad and low volcano composed of basaltic lava flows is likely to be a

Which of the following types of volcanic eruption have occurred on Mount St.Helens since it began erupting in 1980?

Which of the following is not a hazard typically associated with cinder cones?

This volcano is broad and low,and is composed of basaltic lava flows.What kind of volcano is it?

Which of the following is not a major controlling factor on volcanic eruption style?

Which of the following is the best indicator that a volcano might be very dangerous?

When lava flows reach the ocean,they

What event triggered the main eruption of Mount St.Helens in May 1980?

Some scientists think that Yellowstone could cause a future disaster because

Which of the following is not a characteristic of an actively erupting volcano?

Where do most earthquakes occur near midocean ridges?

The most common volcanic rock found in lava flows on composite volcanoes is

What type of deformation is shown in this photograph?

The Nature of Physical Geography

Energy and Matter in the Atmosphere

Atmospheric Motion

Atmospheric Moisture

Weather Systems and Severe Weather

Atmosphere-Ocean-Cryosphere Interactions

Climates Around the World

Water Resources

Understanding Landscapes

Plate Tectonics and Regional Features

Weathering and Mass Wasting

Streams and Flooding

Glaciers and Glacial Landforms

Coasts and Changing Sea Levels

Soils

Ecosystems and Biogeochemical Cycles

Biomes

Filters