Fiber Test Exam Questions and answers
2025
Weft .- .ANS✓✓-Crosswise .thread/yarn .which .wrap .around .the .lengthwise
.thread/yarn
Warp .- .ANS✓✓-Lengthwise .thread/yarn .that .run .vertical
Spinneret .- .ANS✓✓-Determines .the .shape .of .synthetic .fibers
-changing .the .size .and .shape .of .these .alters .the .quality .of .the .fiber
Collection .methods .- .ANS✓✓-Tape
Forceps
Vacuum
Lint .roller
Tests .that .don't .damage .the .fiber: .- .ANS✓✓-Microscopy, .Light .Analysis,
.Chromatology
Four .things .you .look .at .when .evaluating .fiber .evidence .- .ANS✓✓-Type
.(composition, .rarity, .location .in .crime .scene)
Color .(composition .of .dye)
Number .of .Fibers .(more .found=more .violent .crime)
Origination .of .Fiber .(car, .carpet, .clothes, .etc.)
types .of .natural .fibers .- .ANS✓✓-Animal, .Plant, .and .Mineral
Types .of .animal .fibers: .- .ANS✓✓-Hair, .webbing, .fur
Yarn .- .ANS✓✓-What .fibers .that .are .too .short .in .their .natural .state .are .spun
.into
-any .given .yarn .has .a .direction .of .twist, .which .forensic .scientists .analyze
Thread .- .ANS✓✓-A .very .thin .type .of .yarn
Thread .count .- .ANS✓✓-Number .of .weft .and .warp .threads .in .a .square .inch
Twill .Weave .- .ANS✓✓-
, Tabby .Weave .- .ANS✓✓-
Satin .Weave .- .ANS✓✓-
Hair .(type .of .animal .fiber) .- .ANS✓✓--Most .popular .type .of .animal .fiber
-very .loosely .spun .for .comfort--> .leaves .a .lot .of .trace .evidence
-Most .common .fiber=wool .from .sheep
-ex: .wool, .cashmere .from .goats
Wool .- .ANS✓✓-Most .common .type .of .animal .fiber .(hair); .from .sheep
BURN: .
-->shrivels .up, .turns .brownish-orange, .curls .away .from .flame .when .heated. .
-->Catches .fire, .yellow .then .orange .flame
-->smells .like .burnt .hair.
DYE:
-->orange-red, .dark .(second .darkest), .lighter .than .cotton
MICROSCOPE: .
-->looks .like .coronal .hair
Cashmere .- .ANS✓✓-Type .of .animal .fiber .(from .goats)
Silk .- .ANS✓✓-Comes .from .a .cocoon .made .by .a .caterpillar .reared .in .captivity
-very .long .fibers .which .do .not .shed .easily
Fur .- .ANS✓✓-Not .a .textileq
Textile .- .ANS✓✓-Fibers .are .spun .into .yarn .and .yarn .is .woven .into .this.
Coir .- .ANS✓✓--Fruit .fiber: .strong .and .waterproof
-from .outside .of .coconuts
-very .coarse
-used .for .doormats .or .baskets
Cotton .- .ANS✓✓--Seed .Fiber: .easily .dyed .and .woven
--Used .so .extensively .that .it .isn't .much .use .to .Forensic .Scientists
-most .common .plant .fiber
-creates .clothing .and .household .items
BURN: .
--not .much .changes, .blows .and .curls .up .a .bit
--catches .flame .for .a .second, .then .blows .upward, .part .breaks .off
--smells .like .paper .burning
DYE: .
--Dark .red .(darkest)
MICROSCOPE:
--twisted*
--light .red .tint
2025
Weft .- .ANS✓✓-Crosswise .thread/yarn .which .wrap .around .the .lengthwise
.thread/yarn
Warp .- .ANS✓✓-Lengthwise .thread/yarn .that .run .vertical
Spinneret .- .ANS✓✓-Determines .the .shape .of .synthetic .fibers
-changing .the .size .and .shape .of .these .alters .the .quality .of .the .fiber
Collection .methods .- .ANS✓✓-Tape
Forceps
Vacuum
Lint .roller
Tests .that .don't .damage .the .fiber: .- .ANS✓✓-Microscopy, .Light .Analysis,
.Chromatology
Four .things .you .look .at .when .evaluating .fiber .evidence .- .ANS✓✓-Type
.(composition, .rarity, .location .in .crime .scene)
Color .(composition .of .dye)
Number .of .Fibers .(more .found=more .violent .crime)
Origination .of .Fiber .(car, .carpet, .clothes, .etc.)
types .of .natural .fibers .- .ANS✓✓-Animal, .Plant, .and .Mineral
Types .of .animal .fibers: .- .ANS✓✓-Hair, .webbing, .fur
Yarn .- .ANS✓✓-What .fibers .that .are .too .short .in .their .natural .state .are .spun
.into
-any .given .yarn .has .a .direction .of .twist, .which .forensic .scientists .analyze
Thread .- .ANS✓✓-A .very .thin .type .of .yarn
Thread .count .- .ANS✓✓-Number .of .weft .and .warp .threads .in .a .square .inch
Twill .Weave .- .ANS✓✓-
, Tabby .Weave .- .ANS✓✓-
Satin .Weave .- .ANS✓✓-
Hair .(type .of .animal .fiber) .- .ANS✓✓--Most .popular .type .of .animal .fiber
-very .loosely .spun .for .comfort--> .leaves .a .lot .of .trace .evidence
-Most .common .fiber=wool .from .sheep
-ex: .wool, .cashmere .from .goats
Wool .- .ANS✓✓-Most .common .type .of .animal .fiber .(hair); .from .sheep
BURN: .
-->shrivels .up, .turns .brownish-orange, .curls .away .from .flame .when .heated. .
-->Catches .fire, .yellow .then .orange .flame
-->smells .like .burnt .hair.
DYE:
-->orange-red, .dark .(second .darkest), .lighter .than .cotton
MICROSCOPE: .
-->looks .like .coronal .hair
Cashmere .- .ANS✓✓-Type .of .animal .fiber .(from .goats)
Silk .- .ANS✓✓-Comes .from .a .cocoon .made .by .a .caterpillar .reared .in .captivity
-very .long .fibers .which .do .not .shed .easily
Fur .- .ANS✓✓-Not .a .textileq
Textile .- .ANS✓✓-Fibers .are .spun .into .yarn .and .yarn .is .woven .into .this.
Coir .- .ANS✓✓--Fruit .fiber: .strong .and .waterproof
-from .outside .of .coconuts
-very .coarse
-used .for .doormats .or .baskets
Cotton .- .ANS✓✓--Seed .Fiber: .easily .dyed .and .woven
--Used .so .extensively .that .it .isn't .much .use .to .Forensic .Scientists
-most .common .plant .fiber
-creates .clothing .and .household .items
BURN: .
--not .much .changes, .blows .and .curls .up .a .bit
--catches .flame .for .a .second, .then .blows .upward, .part .breaks .off
--smells .like .paper .burning
DYE: .
--Dark .red .(darkest)
MICROSCOPE:
--twisted*
--light .red .tint
