Firefighter I
Fire Streams
Chapter 14 Test
Name:
Date:
Directions: Write the correct letter on the blank before each question.
Objective 1:
List methods that are used with fire streams to reduce the heat
from a fire and provide protection to firefighters and exposures.
________
1.
One method used with fire streams to reduce heat and provide
protection is to create a barrier between a fuel and a fire by: (717)
A.
B.
C.
D.
________
2.
Which of the following is a method by which fire streams can protect
firefighters and property from heat? (717)
A.
B.
C.
D.
________
3.
covering the fuel with a foam blanket.
creating an alternate path for the fuel.
allowing the fire to burn to the reach of the fire stream.
covering the surrounding exposures with a foam blanket.
Creating a pathway
Creating a water curtain
Increasing atmospheric temperature
Containing hot smoke and fire gases in a heated area
Applying water or foam directly onto burning material: (717)
A.
B.
C.
D.
Fire Protection Publications
Oklahoma State University
reduces its temperature.
increases the speed at which it burns.
increases atmospheric temperature.
releases hot smoke and fire gases.
Chapter Test
14-1
Firefighter I
Fire Streams
Objective 2:
Discuss the extinguishing properties of water.
________
4.
When heated to its boiling point, water absorbs heat by: (718)
A.
B.
C.
D.
________
5.
Which of the following terms refers to the amount of heat energy
required to raise the temperature of a specified mass of a substance
by one degree? (718)
A.
B.
C.
D.
________
6.
7.
8.
Specific heat
Heat energy
Vaporization point
Latent heat of vaporization
At 212ºF (100ºC) water expands approximately ____ times its
original volume when converted to steam. (720)
A.
B.
C.
D.
________
Specific heat
Heat energy
Vaporization point
Latent heat of vaporization
Which of the following terms refers to the quantity of heat absorbed
by a substance at the point at which it changes from a liquid to a
vapor? (718)
A.
B.
C.
D.
________
remaining in a liquid state and increasing temperature.
expanding the volume of liquid and reducing temperature.
converting into the gas phase called water vapor or steam.
converting into a semi-solid phase with extremely high
temperatures.
100
750
1200
1700
Which of the following statements about water being used for fire
extinguishment is MOST accurate? (722)
A.
B.
C.
D.
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Oklahoma State University
Water is basically applied in only one manner.
Water is readily available and relatively inexpensive.
Water changing into steam requires a relatively small amount of
heat.
Water has less heat-absorbing capacity than most other
common extinguishing agents.
Chapter Test
14-2
Firefighter I
Fire Streams
Objective 3:
Describe friction loss.
________
9.
Friction loss is defined as that part of total pressure that is lost: (722)
A.
B.
C.
D.
________ 10.
Which of the following is NOT a factor that increases friction loss?
(723)
A.
B.
C.
D.
________ 11.
Damaged hose couplings
Hose just placed in service
Kinks or sharp bends in hose
Hoselines longer than necessary
Elevation pressure refers to a gain or loss in hoseline pressure
caused by: (723)
A.
B.
C.
D.
________ 12.
as water leaves the fire hose.
as water is pumped from its original source.
as water falls upon burning debris or structures.
while forcing water through pipes, fittings, fire hose, and
adapters.
differences in hose sizes.
differences in the size of the apparatus.
differences in operator placement of hoses.
gravity when there is a difference in height.
Which of the following statements about friction loss is MOST
accurate? (722)
A.
B.
C.
D.
It
It
It
It
increases water flow and water pressure.
decreases water flow and reduces water pressure.
increases water flow and reduces water pressure.
decreases water flow and increases water pressure.
Objective 4:
Define water hammer.
________ 13.
Which of the following is a method to help prevent water hammer?
(724)
A.
B.
C.
D.
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Oklahoma State University
Use only fog nozzles.
Limit the number of hoselines used.
Close nozzles, hydrants, valves and hose clamps quickly.
Close nozzles, hydrants, valves and hose clamps slowly.
Chapter Test
14-3
Firefighter I
________ 14.
Fire Streams
When the flow of water through fire hose or pipe is suddenly
stopped, a shock wave is produced when the: (724)
A.
B.
C.
D.
________ 15.
moving
moving
moving
moving
water
water
water
water
reduces to a trickle.
stops all movement.
is forced out the end of the hose.
reaches the end of the hose and bounces back.
Which of the following statements about water hammer is MOST
accurate? (724)
A.
B.
C.
D.
It can damage fire hose, but not water mains or plumbing.
It can damage water mains and plumbing, but not fire hose.
It does not damage water mains, plumbing, fire hose, hydrants,
or fire pumps.
It can cause damage to water mains, plumbing, fire hose,
hydrants, and fire pumps.
Objective 5:
Distinguish among characteristics of fire stream sizes.
________ 16.
Which of the following fire stream classifications discharges less than
40 gpm (160 L/min), including those fed by booster lines? (724)
A.
B.
C.
D.
________ 17.
Which of the following fire stream classifications is supplied by 1½to 3-inch (38 mm to 77 mm) hose, with flows from 40 to 350 gpm
(160 L/min to 1 400 L/min)? (724)
A.
B.
C.
D.
________ 18.
Master stream
Handline stream
Low-volume stream
High-volume stream
Master stream
Handline stream
Low-volume stream
High-volume stream
Which of the following fire stream classifications discharges more
than 350 gpm (1 400 L/min) and is fed by 2½- or 3-inch (65 mm or
77 mm) hoselines? (725)
A.
B.
C.
D.
Fire Protection Publications
Oklahoma State University
Master stream
Handline stream
Low-volume stream
High-volume stream
Chapter Test
14-4
Firefighter I
________ 19.
Fire Streams
The volume of water discharged by a fire stream is determined by
the design of the nozzle and: (725)
A.
B.
C.
D.
type of apparatus.
operator experience.
water pressure at the nozzle.
water pressure at the hydrant.
Objective 6:
Discuss types of streams and nozzles.
________ 20.
Which of the following is a fire stream produced from a fixed orifice
nozzle? (726)
A.
B.
C.
D.
________ 21.
Which of the following is a fire stream that has been broken into
coarsely divided drops and takes on that form as it leaves the
nozzle? (731)
A.
B.
C.
D.
________ 22.
Fog stream
Solid stream
Broken stream
Straight stream
Which of the following is a fire stream that is a fine spray composed
of tiny water droplets? (728)
A.
B.
C.
D.
________ 23.
Fog stream
Solid stream
Broken stream
Straight stream
Fog stream
Solid stream
Broken stream
Straight stream
Which of the following is NOT an advantage of a broken stream?
(731)
A.
B.
C.
D.
Fire Protection Publications
Oklahoma State University
Is recommended for use on Class C fires
Can be effective on fires in confined spaces
Has greater reach and penetration than a fog stream
Absorbs more heat per gallon (liter) than a solid stream
Chapter Test
14-5
Firefighter I
________ 24.
Fire Streams
Which of the following is an advantage of fog streams? (731)
A.
B.
C.
D.
________ 25.
The designed operating pressure for most fog-stream combination
nozzles is: (731)
A.
B.
C.
D.
________ 26.
Dual-position nozzles
Self-adjusting nozzles
Manually adjustable nozzles
Automatic (constant-pressure) nozzles
Which of the following statements about fog streams is MOST
accurate? (728)
A.
B.
C.
D.
________ 28.
45 psi (315 kPa).
50 psi (350 kPa).
75 psi (525 kPa).
100 psi (700 kPa).
Which of the following fog-stream nozzles allows the operator to
change the rate of discharge by rotating the selector ring? (730)
A.
B.
C.
D.
________ 27.
They do not disturb thermal layering.
The discharge pattern can be adjusted to suit the situation.
They are less affected by wind than are solid streams.
They have more reach and penetrating power than solid
streams.
Fog
Fog
Fog
Fog
nozzles permit only one setting.
streams are well suited for fighting interior fires.
streams have more reach than solid streams.
streams are useful for defensive fire fighting operations.
Which of the following is an advantage of solid streams? (727)
A.
B.
C.
D.
Fire Protection Publications
Oklahoma State University
They allow for different stream pattern selections.
Hoselines are less likely kinked at corners and obstructions.
They have greater penetration power than other types of
streams.
They provide greater heat absorption per gallon (liter) delivered
than other types of streams.
Chapter Test
14-6
Firefighter I
Fire Streams
Objective 7:
Discuss handling handline nozzles.
________ 29.
When handling solid-stream nozzles, increasing the nozzle discharge
pressure and flow rate: (732)
A.
B.
C.
D.
________ 30.
The reaction of a solid-stream nozzle is caused by the velocity of the
stream, the flow rate of the stream, and the: (732)
A.
B.
C.
D.
________ 31.
increases nozzle reaction.
decreases nozzle reaction.
has no effect on nozzle reaction.
can either increase or decrease nozzle reaction.
experience of the operator.
temperature of the stream.
discharge pattern of the stream.
intensity of the fire the stream is aimed toward.
When water is discharged at angles from the center line of the fog
stream nozzle: (732)
A.
B.
C.
D.
the reaction forces
the reaction forces
the reaction forces
reaction.
the reaction forces
nozzle reaction.
oppose each other, causing mixed reactions.
combine and increase nozzle reaction.
oppose each other and increase nozzle
may counterbalance each other and reduce
Objective 8:
Describe types of nozzle control valves.
________ 32.
Which of the following is the most common nozzle control valve and
provides effective control with a minimum of effort? (732)
A.
B.
C.
D.
Fire Protection Publications
Oklahoma State University
Ball valve
Slide valve
Rotary control valve
Interlocking control valve
Chapter Test
14-7
Firefighter I
________ 33.
Fire Streams
Which of the following nozzle control valves also controls the
discharge pattern of the stream? (733)
A.
B.
C.
D.
________ 34.
Which of the following consists of an exterior barrel guided by a
screw that moves it forward or backward? (733)
A.
B.
C.
D.
________ 35.
Ball valve
Slide valve
Rotary control valve
Interlocking control valve
Ball valve
Slide valve
Rotary control valve
Interlocking control valve
Which of the following is a cylindrical valve control which seats a
movable cylinder against a shaped cone to turn off the flow of
water? (732)
A.
B.
C.
D.
Ball valve
Slide valve
Rotary control valve
Interlocking control valve
Objective 9:
List checks that should be included in nozzle inspections.
________ 36.
Which of the following checks should be included in nozzle
inspections? (733)
A.
B.
C.
D.
________ 37.
Age of the nozzle
Identification sticker
Speed of nozzle operation
Ease of operation of the nozzle parts
Which of the following is NOT a check that should be included in
nozzle inspections? (733)
A.
B.
C.
D.
Fire Protection Publications
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Internal damage and debris
External damage to the nozzle
Serial number of nozzle visible
Swivel gasket for damage or wear
Chapter Test
14-8