Bloodstain Evidence and Analysis

These flashcards summarize key concepts related to bloodstain evidence, analysis techniques, and patterns observed in forensic investigations.

Origin of bloodstain

The point or source where blood originates.

Distance of bloodstain

The measurement from the source of the blood to the stain.

Direction of impact

The angle from which the blood impacted a surface.

Surface tension

The property of a liquid that causes it to behave as though its surface is covered with a stretched elastic membrane.

Projectile motion

The motion of an object thrown or projected into the air, subject to the force of gravity.

Blood spatter analysis

The study of the shape, size, distribution, and location of blood stains to understand the events surrounding a crime.

Point of convergence

The location where two or more lines drawn through the long axes of bloodstains meet.

Point of origin method

A technique that uses geometry to determine the point from which blood originated.

Low velocity blood spatter

Blood spatter resulting from impacts at speeds of 5 ft/s, typically free-falling drops.

Drag factor

The force that acts on a drop of blood that affects its shape and movement during and after falling.

Void pattern

A blood spatter pattern that indicates an absence of blood due to an object blocking the path of the spatter.

Drip pattern

A pattern created by blood drops falling into wet blood, resulting in a large stain with smaller satellite stains.