Blood & Blood spatter Celebration #3

Last updated about 1 year ago

30 questions

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Library

Blood & Blood spatter Celebration #3

Last updated about 1 year ago

30 questions

1

A __________ is example of an injury that would likely cause high-velocity blood spatter.

1

A __________ bloodstain pattern is a lateral transfer of wet blood caused by bloody hair being dragged across the floor.

1

__________ evidence is collected in clean, unused plastic sealed containers at the crime scene.

1

Confirmation of __________ is performed by conducting an ELISA test.

1

Blood molecules are attracted to each other and tend to stick together as they fall, called __________.

3

Draggable item		Corresponding Item

1

Calculate the percentage of the American population that has AB+ blood type:
_______ % (include 2 decimal places in your answer)

3

Identify the various bloodstain patterns shown in the photograph.

Select all zones that show the area of convergence for blood droplets.

1

3

Draggable item		Corresponding Item

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1

A __________ is example of an injury that would likely cause high-velocity blood spatter.

A __________ bloodstain pattern is a lateral transfer of wet blood caused by bloody hair being dragged across the floor.

__________ evidence is collected in clean, unused plastic sealed containers at the crime scene.

Confirmation of __________ is performed by conducting an ELISA test.

Which direction was the blood traveling in the following photo?

⬅️ 

⬆️ 

⬇️ 

➡️ 

Blood molecules are attracted to each other and tend to stick together as they fall, called __________.

Identify and match the forces affecting blood spatter to their proper descriptions.

Draggable item		Corresponding Item
adhesion		the attraction between molecules of like substances; gives blood a domed shape when resting on a surface
gravity		the attraction between molecules of unlike substances; causes blood to cling to porous surfaces
cohesion		the force of attraction between the earth and another object; gives falling liquids a tear-dropped shape

Calculate the percentage of the American population that has AB+ blood type:
_______ % (include 2 decimal places in your answer)

Identify the various bloodstain patterns shown in the photograph.

Satellites occur when a droplet of blood strikes a surface, _____.

but some of the blood overcomes cohesion and separates from the main droplet of blood

and the droplet elongates or extends due to an uneven or possibly porous surface

and portions of the blood still connected to the droplet extend beyond the droplet

and the point of impact extends the droplet in the direction that the blood was travelling

During the walk-through of a crime scene, an investigator would consider the possibility that _____.

the victim was dragged if a hair swipe pattern is present

cast-off patterns indicate where to locate a moving victim

transfer patterns indicate a victim was struck and the number of blows

furniture was moved after the crime if a blood trail is present

Blood consists of two components of circulating connective tissue, red blood cells and white blood cells, suspended in plasma.

True

False

Storage of liquid blood in plastic must be less than two hours to prevent contamination.

True

False

Hemoglobin is found in __________.

A drop of blood that falls at a 90-degree angle from a wound is a(n) __________.

Calculate the height of the area of origin in the following diagram. Show your work and round to 2 decimal places.
height = _______ feet

Place the items in the proper evidence collection procedure categories.

why would you package any blood evidence in a plastic bag. that's indecent
(drag this item to the plastic bag category)
liquid blood evidence
wet bloodstain on a pillowcase
dried blood on a sock

sealed plastic container
paper bag
plastic bag

Calculate the missing values in the data table. Round to 1 decimal place.

angle of impact = _______°
height of area of origin = _______ feet

Match the blood spatter/nonspatter photos to their correct names.

Draggable item		Corresponding Item
		cast-off
		saturation
		void
		drip trail
		swipe

CSIs performed an antibody test on liquid blood recovered from a crime scene. The results are shown below:

3 suspects were taken in for questioning and each provided a sample of blood. The results are shown in the table below:


Suspect A has __________ blood type.
Suspect B has __________ blood type.
Suspect C has __________ blood type.

Should the police continue investigating any of these suspects as potential owners of the crime scene blood? __________

Round all calculated answers to 1 decimal place.

width of blood droplet 2: _______ mm
length of blood droplet 2: _______ mm
Calculate the impact angle of blood droplet 2._______°

distance from edge of blood droplet 2 to center of area of convergence: _______ mm
Using the scale 1mm = .2 feet, convert the above distance to feet: _______ feet

Use your answer from the previous question to calculate the height of the area of origin. Round to 1 decimal place: _______ feet

White blood cells are responsible for the antigen-antibody response.

True

False

Blood consists of three components of circulating connective tissue, red blood cells, white blood cells, and platelets suspended in plasma.

True

False

CSI's utilize the string method in order to estimate the area of convergence.

True

False

Select all zones that show the area of convergence for blood droplets.

Mr. Ly cut his finger while cutting a guava this morning. In order to ascertain whether or not this is human blood scientists must use a(n)

ELISA test

Kastle-Meyer reagent

luminol test

a combination of the 3 above tests

Match the pictures to the blood test best associated with it.

Draggable item		Corresponding Item
		Kastle-Meyer reagent
		Luminol test
		ELISA test

Which of the following can be used to estimate the area of origin? (Select all that apply):

Order the following droplets from lowest impact angle (0° is lowest) to highest.

B
C
A

Which direction was the blood traveling in the following photo?

⬅️ 

⬆️ 

⬇️ 

➡️ 

Identify and match the forces affecting blood spatter to their proper descriptions.

adhesion

the attraction between molecules of like substances; gives blood a domed shape when resting on a surface

gravity

the attraction between molecules of unlike substances; causes blood to cling to porous surfaces

cohesion

the force of attraction between the earth and another object; gives falling liquids a tear-dropped shape

Satellites occur when a droplet of blood strikes a surface, _____.

but some of the blood overcomes cohesion and separates from the main droplet of blood

and the droplet elongates or extends due to an uneven or possibly porous surface

and portions of the blood still connected to the droplet extend beyond the droplet

and the point of impact extends the droplet in the direction that the blood was travelling

During the walk-through of a crime scene, an investigator would consider the possibility that _____.

the victim was dragged if a hair swipe pattern is present

cast-off patterns indicate where to locate a moving victim

transfer patterns indicate a victim was struck and the number of blows

furniture was moved after the crime if a blood trail is present

Blood consists of two components of circulating connective tissue, red blood cells and white blood cells, suspended in plasma.

True

False

Storage of liquid blood in plastic must be less than two hours to prevent contamination.

True

False

Place the items in the proper evidence collection procedure categories.

why would you package any blood evidence in a plastic bag. that's indecent
(drag this item to the plastic bag category)

liquid blood evidence

wet bloodstain on a pillowcase

dried blood on a sock

sealed plastic container

paper bag

plastic bag

Match the blood spatter/nonspatter photos to their correct names.

cast-off

saturation

void

drip trail

swipe

White blood cells are responsible for the antigen-antibody response.

True

False

Blood consists of three components of circulating connective tissue, red blood cells, white blood cells, and platelets suspended in plasma.

True

False

CSI's utilize the string method in order to estimate the area of convergence.

True

False

Mr. Ly cut his finger while cutting a guava this morning. In order to ascertain whether or not this is human blood scientists must use a(n)

ELISA test

Kastle-Meyer reagent

luminol test

a combination of the 3 above tests

Match the pictures to the blood test best associated with it.

Kastle-Meyer reagent

Luminol test

ELISA test

Which of the following can be used to estimate the area of origin? (Select all that apply):

kastle-meyer test

trigonometry

antibody-antigen test

laser pointers

string method

Order the following droplets from lowest impact angle (0° is lowest) to highest.

B

C

A