Unit 5: Fire Patterns

Question 1

•\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ 
representing the 
lower extent of 
the hot gas layer 
may form on 
vertical surfaces.

Answer 1

Line of Demarcation

Question 2

Smoke and soot collect on ____________ of
buildings or their contents, often on upper
parts of walls in rooms adjacent to the fire.

Answer 2

Cooler surfaces

Question 3

_________ is a term that is often used to
explain effects produced by conductive
heat or heat transfer to a noncombustible
surface.

Answer 3

Clean Burn

Question 4

________________ soften, melt
and flow under exposure to heat
and continue to burn.

Answer 4

Thermoplastics

Question 5

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_hardened into a 
permanent shape in the 
manufacturing process; not 
subject to softening. They will 
char, but will not support flaming 
combustion.

Answer 5

Thermosetting polymer (plastic)

Question 6

•   100-foot steel beam  \_\_\_\_\_\_\_\_\_\_\_ at 
1,000 °F.
•   Expansion may displace restraining 
masonry components, leading to possible 
collapse.
•   Loses half its strength around 1,000 °F.
•   Temperature, load and exposure time 
affect deformation.

Answer 6

lengthens 9 inches

Question 7

Melting temperature of aluminum_________

Answer 7

1220 degrees

Question 8

Melting temperature of copper__________

Answer 8

1981 Degrees

Question 9

FIRE EFFECTS — LIGHT BULBS

Answer 9

Pulled
toward heat
source (over
25 watts).

Question 10

Created by an object blocking the travel of
the heat energy.
• An object that absorbs or reflects heat
energy may result
in a pattern on the
material it protects.

Answer 10

SHADOWING

Question 11

Hot, burning or 
smoldering debris that 
fall or drop down during 
the fire event and 
produce observable 
patterns.
•   May be misinterpreted 
as origin or multiple 
points of origin.

Answer 11

DROP DOWN