Blood Spatter Analysis

How does light source detect blood evidence?

• By reflecting off the surface

• By absorbing into the surface

• By causing fluorescence

• By changing color

What is meant by a presumptive test?

• A test that confirms the presence of a substance

• A preliminary test that suggests the presence of a substance

• A test that determines the exact quantity of a substance

• A test that is always 100% accurate

The Kastle-Meyer test is used to detect the presence of what substance?

• Blood

• Protein

• Starch

• Glucose

What is unique about the luminol test?

• It detects blood traces by emitting light.

• It changes color in the presence of blood.

• It is used to determine blood type.

• It can detect blood from any species.

Draw an illustration of blood spatter with spines and a satellite spatter.

• An illustration of blood spatter with spines and a satellite spatter is a type of bloodstain pattern analysis.

• Blood spatter with spines and satellite spatter is a common topic in forensic science.

• Blood spatter with spines and satellite spatter can be used to determine the angle of impact.

• Blood spatter with spines and satellite spatter is often used in crime scene reconstruction.

Passive bloodstains are caused by:

• a forceful impact

• gravity

• a weapon

• a chemical reaction

The size of the blood drop indicates:

• the volume of blood

• the speed of blood flow

• the height from which it fell

• the type of surface it landed on

Which of the following describes each type of drop size and what it would indicate as the weapon?

• a. Fine-mist spatter indicates a high-velocity impact.

• b. Blood cast off indicates a weapon being swung.

• c. Drops indicate passive bleeding.

• d. Voids indicate an object blocking the spatter.

Explain what happens when the blood is moving.

• The blood remains stationary.

• The blood moves through the veins and arteries, delivering oxygen and nutrients to cells.

• The blood evaporates.

• The blood solidifies.

Explain the line of convergence.

• A line where two air masses meet

• A line where two rivers meet

• A line where two roads meet

• A line where two tectonic plates meet