Lec 10 ECSI 1000 Actual Exam Questions With Correct Detailed Answers.
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Course
ECSI
Institution
ECSI
What is natures oldest phenomena? - correct answer Wildfires
What do wildfires initiate? - correct answer plant re-growth
Where does the majority of fire start from? - correct answer ...
What is natures oldest phenomena? - correct answer Wildfires
What do wildfires initiate? - correct answer plant re-growth
Where does the majority of fire start from? - correct answer Lightning
What are the two main initiators of wildfires? - correct answer Lightning and
Humans
What are some natural uses that humans use from fire? - correct answer Heat,
light, cooking, hunting
How many forest fires occur in Canada in a typical year? - correct answer 9000
On average, how much of Canada becomes burned from wildfires in a typical year? - correct answer
25000 kilometers
What is the stretch of which wildfires mostly occur in Canada? - correct answer
Quebec to the west towards BC and Alaska
True or False
Wildfires tend to occur in less dense areas - correct answer False
Wildfires tend to occur in more dense areas with a large tree population
, What do wildfires to towards photosynthesis? - correct answer Reverse the
process
What do wildfires release? - correct answer Carbon dioxide, water vapour, and
heat
What two gases are the most abundant that are released from wildfires? - correct answer
Water vapour and carbon dioxide
What are the phases of wildfires? - correct answer Preignition, combustion,
and Extinction
Briefly describe the preignition stage in the process of wildfires. - correct answer
The initial warming of fuel, achieving the temperature and humidity favourable towards ignition
What does the preignition stage consist of? - correct answer Preheating and
Pyrolysis
Describe the preheating part of the preignition stage. - correct answer heat
from flames or hot surfaces ahead of the fire front raises the temperature of surrounding fuels, making
them more prone to ignition.
Describe the pyrolysis part of the preignition stage. - correct answer the
chemical decomposition of organic material through the application of heat
What might change the result of the preignition stage? - correct answer Water
moisture contents
Briefly describe the combustion stage in the process of wildfires. - correct answer
involves the actual burning of ignited vegetation and other flammable materials, releasing heat, light,
and gases as the fire consumes fuel and continues to spread.
What does the combustion stage begin with - correct answer Ignition
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