BASIC FIREFIGHTER |VERIFIED QUESTIONS AND CORRECT DETAILED
ANSWERS|RATED AND GRADED A+ NEW UPDATE| 2026/2027.
#1 Cause of fire on ships... and others - ANSWER✔ CARELESS SMOKING HABITS!!!
-DISPOSAL
-SMOKING IN BED
-DISREGARD FOR RESTRICTED
AREAS
POOR HOUSEKEEPING
-Dirty/oily machinery
-Clothes drier lint accumulation
-Improper , non- secured storage
THE ELEMENTS OF FIRE (fire tetrahedron) - ANSWER✔ Heat, oxygen, fuel and chemical chain reaction
Heat - ANSWER✔ Anything that produces the required temperature for ignition will satisfy this leg of
the triangle
-Sun
-Open Flame
-Chemical Reaction
-Sparks
-Friction
-Static Electricity
Oxygen - ANSWER✔ The Earth's atmosphere consists of 21% oxygen. Because fire needs oxygen to
burn, the amount of oxygen available to it controls the rate at which it burns.
,Fuel - ANSWER✔ -Only vapors burn
-Liquids & solids must first be vaporized
Tendency of a substance to vaporize is an indication of _________________________ - ANSWER✔ its
ability to burn.
_____________ vaporize more readily than _____________ - ANSWER✔ Liquids
solids
( Gasoline has a flash point of -45 f )
Gases are already in a _________ state - ANSWER✔ vapor
Chain Reaction - ANSWER✔ You can have Oxygen - Heat - Fuel in the same place at the same time
and still not have a fire
Heat must be sufficient to bring fuel to its Ignition Temperature
FUEL - OXYGEN relationship must be balanced, i.e., be in the _________________________ -
ANSWER✔ Flammable Range
Five classes of fire: - ANSWER✔ 1. Class A - combustible solids
2. Class B - combustible and flammable liquids and gases
3. Class C - energized electrical equipment
4. Class D - combustible metals
5. Class K - cooking media
Class A Fuels - ANSWER✔ -wood
, -paper
-rubber
-plastic
Class B Fuels - ANSWER✔ -Liquids
-Greases
-Gases
Class C Fuels - ANSWER✔ -Live electrical equipment
Class d Fuels - ANSWER✔ -aluminum
-magnesium
- titanium
- zirconium
-sodium
- potassium
- lithium
- calcium
- zinc
Class K Fuels - ANSWER✔ - cooking oils and greases (animal and vegetable fats)
To Stop a Fire - ANSWER✔ remove the fuel, or
remove the heat, or
remove the oxygen, or
interrupt chemical reaction, OR
do any combination of above
ANSWERS|RATED AND GRADED A+ NEW UPDATE| 2026/2027.
#1 Cause of fire on ships... and others - ANSWER✔ CARELESS SMOKING HABITS!!!
-DISPOSAL
-SMOKING IN BED
-DISREGARD FOR RESTRICTED
AREAS
POOR HOUSEKEEPING
-Dirty/oily machinery
-Clothes drier lint accumulation
-Improper , non- secured storage
THE ELEMENTS OF FIRE (fire tetrahedron) - ANSWER✔ Heat, oxygen, fuel and chemical chain reaction
Heat - ANSWER✔ Anything that produces the required temperature for ignition will satisfy this leg of
the triangle
-Sun
-Open Flame
-Chemical Reaction
-Sparks
-Friction
-Static Electricity
Oxygen - ANSWER✔ The Earth's atmosphere consists of 21% oxygen. Because fire needs oxygen to
burn, the amount of oxygen available to it controls the rate at which it burns.
,Fuel - ANSWER✔ -Only vapors burn
-Liquids & solids must first be vaporized
Tendency of a substance to vaporize is an indication of _________________________ - ANSWER✔ its
ability to burn.
_____________ vaporize more readily than _____________ - ANSWER✔ Liquids
solids
( Gasoline has a flash point of -45 f )
Gases are already in a _________ state - ANSWER✔ vapor
Chain Reaction - ANSWER✔ You can have Oxygen - Heat - Fuel in the same place at the same time
and still not have a fire
Heat must be sufficient to bring fuel to its Ignition Temperature
FUEL - OXYGEN relationship must be balanced, i.e., be in the _________________________ -
ANSWER✔ Flammable Range
Five classes of fire: - ANSWER✔ 1. Class A - combustible solids
2. Class B - combustible and flammable liquids and gases
3. Class C - energized electrical equipment
4. Class D - combustible metals
5. Class K - cooking media
Class A Fuels - ANSWER✔ -wood
, -paper
-rubber
-plastic
Class B Fuels - ANSWER✔ -Liquids
-Greases
-Gases
Class C Fuels - ANSWER✔ -Live electrical equipment
Class d Fuels - ANSWER✔ -aluminum
-magnesium
- titanium
- zirconium
-sodium
- potassium
- lithium
- calcium
- zinc
Class K Fuels - ANSWER✔ - cooking oils and greases (animal and vegetable fats)
To Stop a Fire - ANSWER✔ remove the fuel, or
remove the heat, or
remove the oxygen, or
interrupt chemical reaction, OR
do any combination of above
