CFC Bloodstain Pattern Analysis 2

Question 1

What term describes bloodstains produced when blood falls into existing wet blood at a scene?

Accepted Answer

Secondary spatter

Answer

Secondary spatter occurs when a blood source (such as pooled blood) is struck or disturbed, producing additional droplets from the existing wet blood.

Question 2

A 'parent stain' in bloodstain pattern analysis refers to:

Accepted Answer

The blood source from which satellite spatter originated

Answer

The parent stain is the original bloodstain from which satellite droplets are projected upon impact.

Question 3

Which bloodstain pattern is most consistent with a victim who received blows while lying on the ground?

Accepted Answer

Low-velocity impact spatter directly beneath the source

Answer

A victim lying on the ground being struck would produce low-velocity impact spatter distributed directly beneath and around the wound site.

Question 4

In BPA, what does the 'area of convergence' represent?

Accepted Answer

The 2D location on a surface where spatter originated

Answer

The area of convergence is the two-dimensional region on a surface (such as a floor) where the trajectories of individual bloodstains intersect, indicating the general origin of the spatter.

Question 5

A bloodstain with a width-to-length ratio close to 1:1 (nearly circular) was most likely deposited at what angle?

Accepted Answer

Near 90 degrees

Answer

A nearly circular stain indicates the droplet struck the surface at close to 90 degrees (perpendicular), as the sine of 90° equals 1, producing a circular shape.

(CFC) Certified Forensic Consultant Practice Test

(CFC) Certified Forensic Consultant Practice Test

CFC Bloodstain Pattern Analysis 2