Fingerprints

Front

What is a fingerprint?

Back

A fingerprint is an impression made by the pattern of ridges and valleys on the skin of a finger.

Front

What are the three main types of fingerprint patterns?

Back

The three main types of fingerprint patterns are loops, whorls, and arches.

Front

What is a loop fingerprint?

Back

A loop fingerprint is a pattern that has one or more ridges that enter from one side, loop around, and exit the same side.

Front

What is a whorl fingerprint?

Back

A whorl fingerprint is a pattern that has circular or spiral ridges that make a complete circuit.

Front

What is an arch fingerprint?

Back

An arch fingerprint is a pattern where the ridges enter from one side and exit the other side, forming a wave-like pattern.

Front

How many deltas are found in a loop pattern?

Back

A loop pattern typically has one delta.

Front

How many deltas are found in a whorl pattern?

Back

A whorl pattern typically has two or more deltas.

Front

How many deltas are found in an arch pattern?

Back

An arch pattern has zero deltas.

Front

What layer of skin contains friction ridges?

Back

Friction ridges are located in the epidermis layer of the skin.

Front

What is the purpose of fingerprints?

Back

Fingerprints are used for identification purposes because they are unique to each individual.