Chapter 1 Water as an Extinguishing Agent

Question 1

1 ft.³ of water equals how many gallons

Answer 1

7.48 gallons

Question 2

density of water

Answer 2

62.4 lb/ft ³

Question 3

weight of water

Answer 3

8.34 pounds

Question 4

how does water extinguish fire

Answer 4

cooling and smothering

Question 5

specific heat… general

Answer 5

capacity to absorb heat… water 1

Question 6

heat transfer is measured in

Answer 6

BTUs or joules

Question 7

the specific heat of any substance

Answer 7

is the ratio between the amount of heat needed to raise the temperature of are specified quantity of that substance and the amount of heat needed to raise the temperature of an identical quantity of water by the same number of degrees

Question 8

law of latent heat of vaporization

water:

Answer 8

the amount of heat needed to convert water to vapor once water is at its boiling point
970 BTU

Question 9

expansion rate of steam used by the fire service

Answer 9

1 to 1700

Question 10

two disadvantages of using water as a fire extinguishing agent

Answer 10

high surface tension, wetting agents

violent reaction when applied to certain materials