Fire Behavior

Question 0

What four ingredients make up the fire tetrahedron?

Answer 0

Heat
Fuel
Oxygen
Chemical Reactions

Question 1

What three ingredients make up the fire triangle?

Answer 1

Heat
Fuel
Oxygen

Question 2

What are four sources of heat?

Answer 2

Chemical
Electrical
Mechanical
Nuclear

Question 3

What are the four stages of fire burn?

Answer 3

Ignition
Growth
Fully developed
Decay

Question 4

What are four factors that determine the speed of growth and size of a fire?

Answer 4

Oxygen supply
Fuel
Container size
Insulation

Question 5

What stage of fire do flashovers occur at?

Answer 5

Fully developed stage

Question 6

How many classes of fire are there?

Answer 6

Five

A,B,C,D,K

Question 7

What is a class A fire?

Answer 7

Made up of ordinary combustibles.

Paper, wood, rubber, plastic, organic solids

Question 8

What is a class B fire?

Answer 8

Fueled by liquids, gases, or grease type fuels.

Oil, gasoline, alcohol, other liquids

Question 9

What are class C fires?

Answer 9

Usually class A+B fires fueled by electricity.

Question 10

What are class D fires?

Answer 10

Fueled by metals

mostly metals that end in -ium

Question 11

What are class K fires?

Answer 11

Combustible cooking fuels.

Vegetable/animal oils and fats

Question 12

How do you extinguish class A fires?

Answer 12

Cool the fire down (use water)

Question 13

How do you extinguish class B fires?

Answer 13

Cut off oxygen. (Use smothering agent/foam)

Question 14

How do you extinguish class C fires?

Answer 14

Remove the fuel (electricity). Then it becomes a class A or B fire.

Question 15

How do you extinguish class D fires?

Answer 15

Break up the chemical reaction (depends on the metal on fire)

Question 16

What are four attributes to look for when looking at smoke?

Answer 16

Volume
Velocity
Density
Color

Question 17

What does smoke look like on dampened materials typically?

Answer 17

Lighter color

Question 18

What color smoke appears when a material is first heated?

Answer 18

White

Question 19

Natural materials turn to what color as it dries out?

Answer 19

Turn from tan to brown

Question 20

Plastics and painted surfaces will turn to what color as it dries out?

Answer 20

Gray

Question 21

Black turbulent smoke is a sign of what?

Answer 21

Flashover

Question 22

A hot, clean burning fire will emit how much smoke and how is the temperature?

Answer 22

Very little but hot

Question 23

A fast moving fire in a poorly ventilated area will show how much smoke?

Answer 23

A tremendous volume of smoke.

Question 24

Low mass fuels and plastics emit how much smoke and how is the temperature?

Answer 24

Large volumes of smoke with little heat

Question 25

What is it called when a solid turns into a gas?

Answer 25

Pyrolysis

Question 26

At what temperature does water turn into steam?

Answer 26

212 degrees