Question 1

Which of the following structures is designed to allow avalanches to run over a road or railway?

Accepted Answer

A)  deflecting berms 
B)  splitting wedges 
C)  mounds 
D)  snow fences 
E)  avalanche sheds 
A)  deflecting berms 
B)  splitting wedges 
C)  mounds 
D)  snow fences 
E)  avalanche sheds E

Question 2

The number of avalanches that occur annually in western Canada and that are large enough to bury a person is

Accepted Answer

A)  150. 
B)  1500. 
C)  15000. 
D)  150000. 
E)  1500000. 
A)  150. 
B)  1500. 
C)  15000. 
D)  150000. 
E)  1500000. E

Question 3

Most avalanches occur during or soon after a snowstorm.

Accepted Answer

A) True 
 B)False  True

Question 4

Snow avalanches behave the same as rock avalanches.

Accepted Answer

A) True 
 B)False

Question 5

One of the deadliest avalanches in North American history occurred in 1898 during

Accepted Answer

A)  the gold rush to the Klondike. 
B)  the building of the Canadian Pacific Railway. 
C)  the introduction of recreational skiing. 
D)  the gold rush to Alaska. 
E)  increased mining activity in the Rocky Mountains. 
A)  the gold rush to the Klondike. 
B)  the building of the Canadian Pacific Railway. 
C)  the introduction of recreational skiing. 
D)  the gold rush to Alaska. 
E)  increased mining activity in the Rocky Mountains.

Question 6

What was a common trigger for snow avalanches in the Alps during World War I?

Accepted Answer

A)  earthquakes 
B)  artillery fire 
C)  cavalry movements 
D)  refugees crossing snow fields on foot 
E)  unusual spring weather 
A)  earthquakes 
B)  artillery fire 
C)  cavalry movements 
D)  refugees crossing snow fields on foot 
E)  unusual spring weather

Question 7

In mid-latitudes in the Northern Hemisphere,more avalanches happen on

Accepted Answer

A)  sunny leeward slopes where wind deposits alternating weak and strong snow layers. 
B)  sunny south or southwest facing slopes where the sun weakens the surface snow layers. 
C)  west facing leeward slopes where weak slabs fail during warm afternoons. 
D)  west facing windward slopes where variable wind speed creates weak layers. 
E)  shady north or northeast facing slopes where most avalanches occur during cold weather. 
A)  sunny leeward slopes where wind deposits alternating weak and strong snow layers. 
B)  sunny south or southwest facing slopes where the sun weakens the surface snow layers. 
C)  west facing leeward slopes where weak slabs fail during warm afternoons. 
D)  west facing windward slopes where variable wind speed creates weak layers. 
E)  shady north or northeast facing slopes where most avalanches occur during cold weather.

Question 8

In Canada today,which of the following activities leads to the most deaths from snow avalanches?

Accepted Answer

A)  road building through mountainous regions 
B)  operating trains through mountainous regions 
C)  logging in mountainous regions 
D)  mining in mountainous regions 
E)  winter recreation in mountainous regions 
A)  road building through mountainous regions 
B)  operating trains through mountainous regions 
C)  logging in mountainous regions 
D)  mining in mountainous regions 
E)  winter recreation in mountainous regions

Question 9

Most snow avalanches are not witnessed by humans because they occur primarily in remote areas.

Accepted Answer

A) True 
 B)False

Question 10

How do avalanches damage forests?

Accepted Answer

By uprooti

Question 11

A dry snow avalanche will move faster than a wet snow avalanche.

Accepted Answer

A) True 
 B)False

Question 12

A rough surface,such as a talus slope,will anchor snowpack better than a smooth rock surface.

Accepted Answer

A) True 
 B)False

Question 13

Fences or nets installed in the start zone of an avalanche path

Accepted Answer

A)  are effective in protecting all infrastructure. 
B)  are inexpensive. 
C)  are common in North America. 
D)  inhibit tree growth in the avalanche path. 
E)  can help support the snow pack. 
A)  are effective in protecting all infrastructure. 
B)  are inexpensive. 
C)  are common in North America. 
D)  inhibit tree growth in the avalanche path. 
E)  can help support the snow pack.

Question 14

When the avalanche danger level is high

Accepted Answer

A)  human triggered avalanches are possible. 
B)  human triggered avalanches are likely. 
C)  natural avalanches are possible. 
D)  natural avalanches are certain. 
E)  human triggered avalanches are certain. 
A)  human triggered avalanches are possible. 
B)  human triggered avalanches are likely. 
C)  natural avalanches are possible. 
D)  natural avalanches are certain. 
E)  human triggered avalanches are certain.

Question 15

If you were buried in an avalanche and not found for 2 hours,what are your chances of survival?

Accepted Answer

The answer of If you were buried in an avalanche...

Question 16

Avalanches are more common on concave slopes and less common on convex slopes.

Accepted Answer

A) True 
 B)False

Question 17

Explain how an avalanche can be beneficial to a region.

Accepted Answer

An avalanche creates an ecological distu

Question 18

What are the four types of information used to forecast avalanche risks?

Accepted Answer

1.occurrence 
2.stab

Question 19

What is avalanche recurrence interval?

Accepted Answer

It is the average ti

Question 20

Describe how climate change can influence the frequency and severity of snow avalanches.

Accepted Answer

Climate change can (1)increase snowfall

Which of the following structures is designed to allow avalanches to run over a road or railway?

The number of avalanches that occur annually in western Canada and that are large enough to bury a person is

Most avalanches occur during or soon after a snowstorm.

Snow avalanches behave the same as rock avalanches.

One of the deadliest avalanches in North American history occurred in 1898 during

What was a common trigger for snow avalanches in the Alps during World War I?

In mid-latitudes in the Northern Hemisphere,more avalanches happen on

In Canada today,which of the following activities leads to the most deaths from snow avalanches?

Most snow avalanches are not witnessed by humans because they occur primarily in remote areas.

How do avalanches damage forests?

A dry snow avalanche will move faster than a wet snow avalanche.

A rough surface,such as a talus slope,will anchor snowpack better than a smooth rock surface.

Fences or nets installed in the start zone of an avalanche path

When the avalanche danger level is high

If you were buried in an avalanche and not found for 2 hours,what are your chances of survival?

Avalanches are more common on concave slopes and less common on convex slopes.

Explain how an avalanche can be beneficial to a region.

What are the four types of information used to forecast avalanche risks?

What is avalanche recurrence interval?

Describe how climate change can influence the frequency and severity of snow avalanches.

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes and Volcanic Eruptions

Landslides

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

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Exam 7: Snow Avalanches

Which of the following structures is designed to allow avalanches to run over a road or railway?

The number of avalanches that occur annually in western Canada and that are large enough to bury a person is

Most avalanches occur during or soon after a snowstorm.

Snow avalanches behave the same as rock avalanches.

One of the deadliest avalanches in North American history occurred in 1898 during

What was a common trigger for snow avalanches in the Alps during World War I?

In mid-latitudes in the Northern Hemisphere,more avalanches happen on

In Canada today,which of the following activities leads to the most deaths from snow avalanches?

Most snow avalanches are not witnessed by humans because they occur primarily in remote areas.

How do avalanches damage forests?

A dry snow avalanche will move faster than a wet snow avalanche.

A rough surface,such as a talus slope,will anchor snowpack better than a smooth rock surface.

Fences or nets installed in the start zone of an avalanche path

When the avalanche danger level is high

If you were buried in an avalanche and not found for 2 hours,what are your chances of survival?

Avalanches are more common on concave slopes and less common on convex slopes.

Explain how an avalanche can be beneficial to a region.

What are the four types of information used to forecast avalanche risks?

What is avalanche recurrence interval?

Describe how climate change can influence the frequency and severity of snow avalanches.

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes and Volcanic Eruptions

Landslides

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