Fingerprint Pre-Lab

Which ridge shape is this?

• plain arch

• whorl

• loop

• golden arch

Which ridge shape is this?

• plain arch

• whorl

• loop

• golden arch

Which ridge shape is this?

• plain arch

• whorl

• loop

• golden arch

Match the following methods with the type of fingerprints they make.

• finger into soft medium

• latent print

• dusting to find finger oils

• imprint

• inked finger on surface

• patent print

Organize the printing media into the right fingerprint categories:

Groups:

(a) imprint

,

(b) patent print

,

(c) latent print

• sweat on surface

• pressed in clay

• pressed in wax

• skin oils on surface

• pressed in soap

• motor oil on door

• proteins on surface

• blood on weapon

• ink on paper

Which surface features will hold the best fingerprints?

• smooth

• dry

• textured

• porous

Which premises do fingerprint identifications rely on?

• persistence

• uniqueness

• practice

• observation

Place the following in the order of fingerprint identification:

• collect print

• analyze loop, whorl, and arch patterns

• analyze ridge characteristics

• compare to prints on file

What do you hope to learn through this lab?

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