Blood spatter

What can blood spatter evidence tell you?

• the weapon used

• handedness of the assailant

• the order of the events

• angle of impact

• all of the above

How are you able to determine the height of the perpetrator?

• measuring the angle of impact

• checking the source of origin

• finding the area of convergence

• location of the blood spatter

• all of the above

What would happen if you gave a person with AB blood a type A blood transfusion?

• the person would die

• they would also need B blood

• nothing, they can accept A blood

• it would need to be mixed with O blood

• all of the above

How is blood classified as evidence?

• class evidence

• individual evidence if it has DNA

• not usable as evidence

• both A & B

• none of the above

What is luminol?

• a presumptive test to find blood

• a chemical that makes blood glow if present

• a chemical that reacts with iron in hemoglobin

• a chemical that has a blue glow

• all of the above

How is blood evidence collected?

• with a warrant

• with gloves

• packaged separately

• placed in plastic containers

• all of the above

What are splines and satellite drops?

• parts of blood spatter

• always present

• help determine directionality and angle

• both A & C

• none of the above

What is the area of convergence?

• spot where blood spatter is impacted

• the intersection of several stains from opposite sides of the spatter pattern

• the angles of impact added together

• where satellite drops pool together

• none of the above

How many antigens does O- blood type have?

• 3

• 2

• 1

• 6

• 0

What is cohesion?

• the opposite of adhesion

• the attraction of like molecules

• the attraction of unlike molecules

• both A & B

• none of the above