Avalanche Types

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Questions and Answers

What is the characteristic of snow required for a loose snow avalanche to occur?

  • Snow with a mix of cohesive and loose layers
  • Snow with high cohesion
  • Snow with poor bonding
  • Snow with low cohesion (correct)

What is the primary difference between slab avalanches and loose snow avalanches?

  • Cohesion of snow layers (correct)
  • Size of the avalanche
  • Depth of snow layers
  • Speed of motion

Why are slab avalanches considered the most dangerous?

  • They are faster in speed
  • They are larger in size
  • They can start in either shallow or deep snow layers (correct)
  • They are more unpredictable

What is the primary factor in the successful rescue of a person buried in an avalanche?

<p>Actions taken by unburied survivors (D)</p> Signup and view all the answers

What should you do when crossing an avalanche track cannot be avoided?

<p>Select the shortest possible route high on the slope or low in the run-out zone (C)</p> Signup and view all the answers

What is the purpose of assigning a spotter at the top and bottom of the track?

<p>To provide a warning signal (B)</p> Signup and view all the answers

What should you do with larger packs when crossing an avalanche track?

<p>Loosen them (C)</p> Signup and view all the answers

Why should teams performing rescue operations in an avalanche area be mentally prepared?

<p>For the possibility that they too may be overtaken by an avalanche (A)</p> Signup and view all the answers

What should you do if an acetylene cylinder has been laid on its side?

<p>Place the cylinder upright and wait at least one hour before using (B)</p> Signup and view all the answers

Why is it important to call gases by their proper names?

<p>To avoid confusion that could cause death or injury (B)</p> Signup and view all the answers

What is the smell of ammonia often compared to?

<p>The smell of drying urine (A)</p> Signup and view all the answers

At what concentration can ammonia's smell be detected?

<p>1-50 ppm (A)</p> Signup and view all the answers

What is the explosive range of ammonia?

<p>16%–25% (B)</p> Signup and view all the answers

How is ammonia typically stored?

<p>In commercial cylinders as a compressed liquefied gas (D)</p> Signup and view all the answers

What can cause ammonia to become corrosive and explosive?

<p>Heat and oxidizing substances (A)</p> Signup and view all the answers

What is the minimum concentration of ammonia that can cause rapid death?

<p>5000 ppm (D)</p> Signup and view all the answers

What is the explosive range of hydrogen sulphide?

<p>4.3%–45% (A)</p> Signup and view all the answers

What can cause dust explosions that create hydrogen sulphide?

<p>Blasting operations in sulphide ore bodies (D)</p> Signup and view all the answers

What is the immediate effect of hydrogen sulphide on humans?

<p>Paralysis of the sense of smell (C)</p> Signup and view all the answers

What is the concentration of hydrogen sulphide that is immediately dangerous to life and health?

<p>100 PPM (C)</p> Signup and view all the answers

What is the characteristic smell of MAPP gas?

<p>Fishy (A)</p> Signup and view all the answers

What is the explosive range of MAPP gas?

<p>1.8%–11.7% (D)</p> Signup and view all the answers

What is the effect of high concentrations of MAPP gas on humans?

<p>Anaesthetizing effect (A)</p> Signup and view all the answers

How is MAPP gas stored?

<p>As a liquid under pressure (A)</p> Signup and view all the answers

What is the percentage of Nitrogen in the air?

<p>78.01% (B)</p> Signup and view all the answers

What is the smell of Hydrogen Cyanide?

<p>Bitter Almond odour (D)</p> Signup and view all the answers

What is the source of Carbon Monoxide?

<p>Incomplete combustion, diesel and gas engine exhaust (B)</p> Signup and view all the answers

What is the smell of Sulphur Dioxide?

<p>Sulphur smell (D)</p> Signup and view all the answers

What is the source of Hydrogen Sulphide?

<p>Decomposition of some sulphur compounds (B)</p> Signup and view all the answers

What is the characteristic of Carbon Dioxide?

<p>Taste in high concentration (A)</p> Signup and view all the answers

What is the source of Oxygen?

<p>Constituent of air (D)</p> Signup and view all the answers

What is the smell of Chlorine?

<p>Bleach smell (B)</p> Signup and view all the answers

What factor does not influence the size and speed of the resonance wave?

<p>Color of the vehicle (D)</p> Signup and view all the answers

What is the maximum allowable mass of a vehicle in motion for an ice thickness of 12.5 cm?

<p>9,025 kg (C)</p> Signup and view all the answers

What is the speed limit on ice roads for an empty vehicle?

<p>35 km/h (A)</p> Signup and view all the answers

What can be the result of the resonance wave on the ice?

<p>A blowout or an ice failure (A)</p> Signup and view all the answers

What is the term for the range of physiological reactions to adverse temperature conditions?

<p>Thermal stress (C)</p> Signup and view all the answers

What is the purpose of Gold's Formula?

<p>To determine the maximum allowable mass of a vehicle in motion (A)</p> Signup and view all the answers

What is the maximum allowable mass of a vehicle in motion for an ice thickness of 20 cm?

<p>32,400 kg (D)</p> Signup and view all the answers

What is the role of mine rescuers in relation to thermal stress?

<p>To recognize and adequately respond to thermal stress (D)</p> Signup and view all the answers

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