SCI 220 FINAL EXAM 2025-2026 QUESTIONS
AND ANSWERS GRADED A+ GCU
If blood strikes a rough surface, what type of satellite spatter will it produce?
Lots of spatter
What is the relationship between force and spatter size?
They are inversely related (the more force applied, the smaller the spatter)
Larger drops have a ________ mass
larger
Droplets with a larger size & mass can travel ___________ than drops with a
smaller size & mass.
Farther
How far can mist blood spatter travel?
,Up to 4 feet
What are the 6 general features of blood stains?
1. Direction of orientation.
2. Angle of blood on surface impact.
3. Location/position of body during bleeding.
4. Movement of bleeding person.
5. Minimum number of blows administered.
6. Approx. location of person inflicting blows.
What are the three main types of blood stains?
Passive, Transfer, and Impact
What are passive blood stains?
Stains due to the force of gravity: drops, flows, pools.
What are transfer blood stains?
Stains created when an object comes into contact with the stains: swipe, wipe,
pattern transfer.
, What are impact blood stains?
Stains created when blood is projected through the air as a result of force: gushes,
spurts.
Blood stains are ________ during free fall because of __________.
Spherical; surface tension
What do blood droplets do during free fall?
They oscillate
Blood will stay ________ until it is acted on by a _________.
Spherical; force
If blood strikes a smooth surface, what type of satellite spatter will it produce?
Very few
AND ANSWERS GRADED A+ GCU
If blood strikes a rough surface, what type of satellite spatter will it produce?
Lots of spatter
What is the relationship between force and spatter size?
They are inversely related (the more force applied, the smaller the spatter)
Larger drops have a ________ mass
larger
Droplets with a larger size & mass can travel ___________ than drops with a
smaller size & mass.
Farther
How far can mist blood spatter travel?
,Up to 4 feet
What are the 6 general features of blood stains?
1. Direction of orientation.
2. Angle of blood on surface impact.
3. Location/position of body during bleeding.
4. Movement of bleeding person.
5. Minimum number of blows administered.
6. Approx. location of person inflicting blows.
What are the three main types of blood stains?
Passive, Transfer, and Impact
What are passive blood stains?
Stains due to the force of gravity: drops, flows, pools.
What are transfer blood stains?
Stains created when an object comes into contact with the stains: swipe, wipe,
pattern transfer.
, What are impact blood stains?
Stains created when blood is projected through the air as a result of force: gushes,
spurts.
Blood stains are ________ during free fall because of __________.
Spherical; surface tension
What do blood droplets do during free fall?
They oscillate
Blood will stay ________ until it is acted on by a _________.
Spherical; force
If blood strikes a smooth surface, what type of satellite spatter will it produce?
Very few
