Forensic Science Blood and Blood Spatter

a three- dimensional view formed using lines of convergence and angles of impact of at least two different drops of blood that indicates the location of the source of the blood spatter

• point of origin 

• satellite drop of blood 

• antigen-antibody response 

• antigen

Two basic types of blood evidence are:

• phenolphthalein and dried bloodstains

• liquid blood evidence and dried bloodstains

• Luminol and Leucomalachite

These proteins are found on the surface of red blood cells and they provide self identity

• antibodies

• DNA

• phospholipids

• antigens

Tags

NGSS.HS-LS1-1

Quentin is a crime scene investigator. He believes a violent crime may have occurred in the bedroom of an apartment but he sees no blood. Which of the following chemicals reacts with iron produces a glowing blue color if blood is present?

• Luminol

• Fluorescein

• HemaStix

• LCV

Which letter best shows the origin of the blood?

• A

• B

• C

• D

Tags

NGSS.HS-LS1-4

How does the velocity of impact change the blood stain pattern?

• Higher velocity, larger diameter

• higher velocity, smaller diameter

• lower velocity, smaller diameter

• Medium velocity, small diameter

Blood typing is considered

• a class characteristic

• an individual characteristic

• both of these

• neither of these

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the angle of impact?

• 90 degrees

• 56 degrees

• 65 degrees

• 46 degrees

The arrow is pointing to a

• satellite

• spine

• parent drop

What blood spatter pattern is seen in the picture?

• Transfer/Contact

• Swipe

• Wipe

• Saturation