Question 1

What is an avalanche track?

Accepted Answer

It is the part of the avalanch

Question 2

The run-out for a medium-sized snow avalanche

Accepted Answer

A)  stops on the slope. 
B)  is less than 100 m from its starting point. 
C)  continues to the bottom of the slope. 
D)  continues until the slope angle is zero. 
E)  continues up the lower part of the opposite slope. 
A)  stops on the slope. 
B)  is less than 100 m from its starting point. 
C)  continues to the bottom of the slope. 
D)  continues until the slope angle is zero. 
E)  continues up the lower part of the opposite slope.

Question 3

The highest incidence of avalanches in Canada occurs in the Arctic.

Accepted Answer

A) True 
 B)False

Question 4

How dangerous is a sluff compared to a small avalanche?

Accepted Answer

A sluff is a small snow slide

Question 5

Avalanche hazard is commonly greater at low elevations because snowfall and winds are greater there.

Accepted Answer

A) True 
 B)False

Question 6

Traffic delays,due to avalanches,can result in high economic losses.

Accepted Answer

A) True 
 B)False

Question 7

What is hoar?

Accepted Answer

Hoar consists of ice crystals

Question 8

What are the general conditions required for an avalanche to occur?

Accepted Answer

The snowpack must be greater t

Question 9

Describe a link between avalanches and another natural hazard.

Accepted Answer

Avalanches can be triggered by

Question 10

Which of the following structures is designed to allow avalanches to move around a structure?

Accepted Answer

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

Question 11

How does clear cutting influence the future avalanche danger to remaining stands of trees?

Accepted Answer

Clear cutting creates new open areas in

Question 12

Most skiers,snowboarders,and snowmobilers prefer slope angles where

Accepted Answer

A)  sluffs are frequent. 
B)  point release avalanches are frequent. 
C)  slab avalanches are frequent. 
D)  wet slides are frequent. 
E)  hoar frost is frequent. 
A)  sluffs are frequent. 
B)  point release avalanches are frequent. 
C)  slab avalanches are frequent. 
D)  wet slides are frequent. 
E)  hoar frost is frequent.

Question 13

Avalanches are only considered a hazard when humans interact with them.

Accepted Answer

A) True 
 B)False

Question 14

Avalanche hazard is commonly increased

Accepted Answer

A)  on slopes greater than 60 degrees. 
B)  on tree covered slopes. 
C)  on steep talus covered slopes. 
D)  at lower elevations. 
E)  on slopes with gullies or ravines. 
A)  on slopes greater than 60 degrees. 
B)  on tree covered slopes. 
C)  on steep talus covered slopes. 
D)  at lower elevations. 
E)  on slopes with gullies or ravines.

Question 15

Why is new snow susceptible to sliding?

Accepted Answer

Because it has not h

Question 16

If you were an avalanche forecaster charged with deciding whether or not to allow a highway or ski area to remain open,what factors would you consider and what would you do with contradictory evidence?

Accepted Answer

Observe and monitor: avalanches in the a

Question 17

Snow accumulation on the ground

Accepted Answer

A)  is always greater at higher elevations. 
B)  does not occur at sea level. 
C)  does not differ over short distances. 
D)  sloughs away on slopes steep than 45 degrees. 
E)  is always greater at higher latitudes. 
A)  is always greater at higher elevations. 
B)  does not occur at sea level. 
C)  does not differ over short distances. 
D)  sloughs away on slopes steep than 45 degrees. 
E)  is always greater at higher latitudes.

Question 18

In a slab avalanche,the slab stays intact as it moves downslope.

Accepted Answer

A) True 
 B)False

Question 19

What is a point-release avalanche?

Accepted Answer

It is an avalanche that begins

Question 20

A point release avalanche results from initial failure of a small amount of snow.

Accepted Answer

A) True 
 B)False

What is an avalanche track?

The run-out for a medium-sized snow avalanche

The highest incidence of avalanches in Canada occurs in the Arctic.

How dangerous is a sluff compared to a small avalanche?

Avalanche hazard is commonly greater at low elevations because snowfall and winds are greater there.

Traffic delays,due to avalanches,can result in high economic losses.

What is hoar?

What are the general conditions required for an avalanche to occur?

Describe a link between avalanches and another natural hazard.

Which of the following structures is designed to allow avalanches to move around a structure?

How does clear cutting influence the future avalanche danger to remaining stands of trees?

Most skiers,snowboarders,and snowmobilers prefer slope angles where

Avalanches are only considered a hazard when humans interact with them.

Avalanche hazard is commonly increased

Why is new snow susceptible to sliding?

If you were an avalanche forecaster charged with deciding whether or not to allow a highway or ski area to remain open,what factors would you consider and what would you do with contradictory evidence?

Snow accumulation on the ground

In a slab avalanche,the slab stays intact as it moves downslope.

What is a point-release avalanche?

A point release avalanche results from initial failure of a small amount of snow.

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

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Exam 7: Snow Avalanches

What is an avalanche track?

The run-out for a medium-sized snow avalanche

The highest incidence of avalanches in Canada occurs in the Arctic.

How dangerous is a sluff compared to a small avalanche?

Avalanche hazard is commonly greater at low elevations because snowfall and winds are greater there.

Traffic delays,due to avalanches,can result in high economic losses.

What is hoar?

What are the general conditions required for an avalanche to occur?

Describe a link between avalanches and another natural hazard.

Which of the following structures is designed to allow avalanches to move around a structure?

How does clear cutting influence the future avalanche danger to remaining stands of trees?

Most skiers,snowboarders,and snowmobilers prefer slope angles where

Avalanches are only considered a hazard when humans interact with them.

Avalanche hazard is commonly increased

Why is new snow susceptible to sliding?

If you were an avalanche forecaster charged with deciding whether or not to allow a highway or ski area to remain open,what factors would you consider and what would you do with contradictory evidence?

Snow accumulation on the ground

In a slab avalanche,the slab stays intact as it moves downslope.

What is a point-release avalanche?

A point release avalanche results from initial failure of a small amount of snow.

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