Safety Officer Chapter 6-3 Complete
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Questions and Answers

What is the main reason that has led to more severe content and structure fires according to the text?

  • Increased firefighter entrapments
  • Changes in the way buildings are constructed and the contents stored within them (correct)
  • Decrease in the quantity of smoke being produced
  • Obsolescence of the four-phase fire behavior model

Which phase of the ventilation-controlled fire behavior model often occurs when firefighters open a door for fire attack?

  • Fully developed
  • Initial growth
  • Explosive growth (correct)
  • Ventilation-limited

What is the primary culprit for the sheer quantity of smoke at a building fire?

  • Gasses
  • Pyrolysis (correct)
  • Particulates
  • Aerosols

Why can an explosive growth event render interior firefighting efforts useless?

<p>Extreme heat-release rate of smoke ignition (B)</p> Signup and view all the answers

What is the term for a warning sign characterized by the intermittent ignition of small pockets of smoke, usually seen as fingers of flame dancing through the upper smoke layer?

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

In fire behavior terms, what does 'flame-over' refer to?

<p>Burning of the overhead smoke layer within a room (A)</p> Signup and view all the answers

What is a 'smoke explosion' in terms of a hostile fire event?

<p>Sudden ignition and rapid expansion of a smoke pocket (B)</p> Signup and view all the answers

Which term describes the sudden occurrence when all the surfaces and contents of a space reach their ignition temperature almost simultaneously?

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

How do the four attributes of smoke contribute to understanding fire behavior within a building?

<p>They provide insight into the toxicity and flammability of the smoke (C)</p> Signup and view all the answers

'Hostile fire event' refers to a phenomenon that can suddenly harm firefighters. Which of the following is NOT considered a hostile fire event according to the text?

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

What are the factors that affect flow paths and compartmentalized fire growth?

<p>Compartment size, interior geometry, continuity of the fire load, and size and status of exterior openings (C)</p> Signup and view all the answers

What is the ignition temperature required for smoke to start?

<p>$450°F$ ($232°C$) (A)</p> Signup and view all the answers

Which hostile fire event is described as a spark-induced ignition of a smoke pocket away from the actual fire?

<p>Smoke explosion (B)</p> Signup and view all the answers

What is the term used for the sudden detonation of oxygen-deficient smoke products within a closed, pressurized space?

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

What is considered a warning sign of a flame-over event?

<p>Turbulent smoke filling a room (C)</p> Signup and view all the answers

What does the color of smoke indicate according to the text?

<p>Level of heating present (A)</p> Signup and view all the answers

What does black fire refer to?

<p>A slang term for difficult firefighting situations (B)</p> Signup and view all the answers

What does laminar velocity indicate according to the text?

<p>'White fire' condition (C)</p> Signup and view all the answers

"Reading smoke" refers to understanding what attribute of smoke?

<p>$VVDC$ (Volume, Velocity, Density, Color) (A)</p> Signup and view all the answers

'Ghosting' in the context of hostile fire events refers to what phenomenon?

<p>'Smoke flow paths moving faster than firefighters' (D)</p> Signup and view all the answers

What term is used for the more-or-less simultaneous ignition of all surfaces and contents in a room due to radiant heating?

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

What are some factors that can influence VVDC observations?

<p>Compartment, size of flow path, outside weather, and firefighting efforts (C)</p> Signup and view all the answers

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