Question 1

The dissolution of limestone produces dissolved

Accepted Answer

A)  calcium ions. 
B)  sodium ions. 
C)  chlorine ions. 
D)  sulfate ions. 
E)  potassium ions. 
A)  calcium ions. 
B)  sodium ions. 
C)  chlorine ions. 
D)  sulfate ions. 
E)  potassium ions.

Question 2

How is most table salt produced?

Accepted Answer

A)  evaporation of seawater 
B)  open-pit salt mines 
C)  mountaintop removal 
D)  solution mines 
E)  shaft and tunnel mines 
A)  evaporation of seawater 
B)  open-pit salt mines 
C)  mountaintop removal 
D)  solution mines 
E)  shaft and tunnel mines

Question 3

In order to avoid melting permafrost,homes in permafrost area are elevated above ground.

Accepted Answer

A) True 
 B)False

Question 4

Troglobites

Accepted Answer

A)  are a group of early humans who made their home in caves. 
B)  include all bats. 
C)  are plants that photosynthesize without light. 
D)  are organisms that have evolved to survive in the complete darkness of caves. 
E)  are a species of fish that have no eyes. 
A)  are a group of early humans who made their home in caves. 
B)  include all bats. 
C)  are plants that photosynthesize without light. 
D)  are organisms that have evolved to survive in the complete darkness of caves. 
E)  are a species of fish that have no eyes.

Question 5

If you were planning to build a house on permafrost,which of the following precautions would be prudent?

Accepted Answer

A)  Dig a deep foundation into the permafrost. 
B)  Construct a basement. 
C)  Build directly on the ground and insulate your floor well. 
D)  Elevate your house above the ground. 
E)  Excavate to bedrock, even if it's tens of metres down. 
A)  Dig a deep foundation into the permafrost. 
B)  Construct a basement. 
C)  Build directly on the ground and insulate your floor well. 
D)  Elevate your house above the ground. 
E)  Excavate to bedrock, even if it's tens of metres down.

Question 6

Approximately what percentage of the Earth's land surface is permafrost?

Accepted Answer

A)  1% 
B)  2% 
C)  5% 
D)  10% 
E)  20% 
A)  1% 
B)  2% 
C)  5% 
D)  10% 
E)  20%

Question 7

Millions of dollars in damage is caused each year by expansive soils.

Accepted Answer

A) True 
 B)False

Question 8

What is the difference between stalactites and stalagmites?

Accepted Answer

Stalactites grow downward from

Question 9

Flowstone consists of

Accepted Answer

A)  clay-rich sediments that catastrophically fail and begin to flow. 
B)  limestone deposits on sides of cave walls. 
C)  sandy units, which act as aquifers and allow fluid movement. 
D)  porous limestone, which allows percolation of waters. 
E)  rock which is susceptible to subsidence. 
A)  clay-rich sediments that catastrophically fail and begin to flow. 
B)  limestone deposits on sides of cave walls. 
C)  sandy units, which act as aquifers and allow fluid movement. 
D)  porous limestone, which allows percolation of waters. 
E)  rock which is susceptible to subsidence.

Question 10

Deposits of calcium carbonate that grow from the ceiling of caverns are known as

Accepted Answer

A)  stalagmites. 
B)  stalactites. 
C)  flowstone. 
D)  tower karst. 
E)  limestone. 
A)  stalagmites. 
B)  stalactites. 
C)  flowstone. 
D)  tower karst. 
E)  limestone.

Question 11

Sinkholes tens of metres in diameter can form in only a few minutes.

Accepted Answer

A) True 
 B)False

Question 12

Tower karst

Accepted Answer

A)  is the result of dissolution in warm tropical climates. 
B)  is common in Canada. 
C)  develops in granitic rocks. 
D)  is caused by alkaline groundwater. 
E)  occurs in volcanic areas. 
A)  is the result of dissolution in warm tropical climates. 
B)  is common in Canada. 
C)  develops in granitic rocks. 
D)  is caused by alkaline groundwater. 
E)  occurs in volcanic areas.

Question 13

In warmer climates,discontinuous patches or thin layers of permanently frozen ground are included as permafrost.

Accepted Answer

A) True 
 B)False

Question 14

Draining wetlands

Accepted Answer

A)  causes uplift and increases the risk of flooding. 
B)  causes subsidence and increases the risk of flooding. 
C)  causes subsidence but decreases the risk of flooding. 
D)  does not cause subsidence or uplift. 
E)  decreases the need for levees. 
A)  causes uplift and increases the risk of flooding. 
B)  causes subsidence and increases the risk of flooding. 
C)  causes subsidence but decreases the risk of flooding. 
D)  does not cause subsidence or uplift. 
E)  decreases the need for levees.

Question 15

Name two ways in which we can prevent damage from subsidence.

Accepted Answer

Geological mapping in advance of constru

Question 16

What is subsidence?

Accepted Answer

Downward movement of

Question 17

How does the removal of groundwater from aquifers contribute to subsidence?

Accepted Answer

In an aquifer the water occupies pores b

Question 18

Discuss the issue of melting (thawing)permafrost in the Canadian Arctic and how it has evolved over time.

Accepted Answer

Historically,people have contributed to

Question 19

Structural damage due to soils shrinking and swelling is a larger problem in regions with pronounced wet and dry seasons than in regions where precipitation is more evenly distributed throughout the year.

Accepted Answer

A) True 
 B)False

Question 20

Expansive soils contain the clay mineral smectite.

Accepted Answer

A) True 
 B)False

The dissolution of limestone produces dissolved

How is most table salt produced?

In order to avoid melting permafrost,homes in permafrost area are elevated above ground.

Troglobites

If you were planning to build a house on permafrost,which of the following precautions would be prudent?

Approximately what percentage of the Earth's land surface is permafrost?

Millions of dollars in damage is caused each year by expansive soils.

What is the difference between stalactites and stalagmites?

Flowstone consists of

Deposits of calcium carbonate that grow from the ceiling of caverns are known as

Sinkholes tens of metres in diameter can form in only a few minutes.

Tower karst

In warmer climates,discontinuous patches or thin layers of permanently frozen ground are included as permafrost.

Draining wetlands

Name two ways in which we can prevent damage from subsidence.

What is subsidence?

How does the removal of groundwater from aquifers contribute to subsidence?

Discuss the issue of melting (thawing)permafrost in the Canadian Arctic and how it has evolved over time.

Structural damage due to soils shrinking and swelling is a larger problem in regions with pronounced wet and dry seasons than in regions where precipitation is more evenly distributed throughout the year.

Expansive soils contain the clay mineral smectite.

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes and Volcanic Eruptions

Landslides

Snow Avalanches

River Flooding

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Waves, Currents, and Coastlines

Wildfires

Climate Change

Meteorite Impacts and Extinctions

Filters

Exam 8: Subsidence and Soil Expansion and Contraction

The dissolution of limestone produces dissolved

How is most table salt produced?

In order to avoid melting permafrost,homes in permafrost area are elevated above ground.

Troglobites

If you were planning to build a house on permafrost,which of the following precautions would be prudent?

Approximately what percentage of the Earth's land surface is permafrost?

Millions of dollars in damage is caused each year by expansive soils.

What is the difference between stalactites and stalagmites?

Flowstone consists of

Deposits of calcium carbonate that grow from the ceiling of caverns are known as

Sinkholes tens of metres in diameter can form in only a few minutes.

Tower karst

In warmer climates,discontinuous patches or thin layers of permanently frozen ground are included as permafrost.

Draining wetlands

Name two ways in which we can prevent damage from subsidence.

What is subsidence?

How does the removal of groundwater from aquifers contribute to subsidence?

Discuss the issue of melting (thawing)permafrost in the Canadian Arctic and how it has evolved over time.

Structural damage due to soils shrinking and swelling is a larger problem in regions with pronounced wet and dry seasons than in regions where precipitation is more evenly distributed throughout the year.

Expansive soils contain the clay mineral smectite.

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes and Volcanic Eruptions

Landslides

Snow Avalanches

River Flooding

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Waves, Currents, and Coastlines

Wildfires

Climate Change

Meteorite Impacts and Extinctions

Filters