Blood and blood spatter Celebration #2

Last updated about 1 year ago

33 questions

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Library

Blood and blood spatter Celebration #2

Last updated about 1 year ago

33 questions

1

A __________ is an 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

When blood molecules are attracted to the surface they come into contact with, this is known as __________.

3

Draggable item		Corresponding Item

1

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

3

Identify the various bloodstain patterns shown in the photograph.

Examine the 9 blood droplets. Which 3 drops struck the surface farthest from a 90-degree angle?

2

Calculate the impact angle of blood droplet A and B. Round all answers to 2 decimal places.

Impact angle = sin-1(width/length)

A: _______ degrees
B: _______ degrees

1

The white circled area in the following image indicates the __________.

1

Below is an illustration of white and red blood cells. Select the type of cell that can provide individual evidence.

A __________ is an 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 that was once present in the sink and washed away can be detected using _____________.

an ELISA test

luminol testing solution

Kastle-Meyer reagent

ferric chloride solution

When blood molecules are attracted to the surface they come into contact with, this is known as __________.

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

Draggable item		Corresponding Item
gravity		the attraction between molecules of like substances; gives blood a domed shape when resting on a surface
cohesion		the attraction between molecules of unlike substances; causes blood to cling to porous surfaces
adhesion		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 O+ 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 portions of the blood still connected to the droplet extend beyond the droplet

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

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

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

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

cast-off patterns indicate where to locate a moving victim

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.

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

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.

Which suspect should the police continue investigating 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

Answer the following question based on the following illustration:

The surface of red blood cells have different __________. Judging by the 2 different types of symbols shown, this individual would most likely have type__________ blood.

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

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):

Examine the 9 blood droplets. Which 3 drops struck the surface farthest from a 90-degree angle?

Calculate the impact angle of blood droplet A and B. Round all answers to 2 decimal places.

Impact angle = sin-1(width/length)

A: _______ degrees
B: _______ degrees

The white circled area in the following image indicates the __________.

Below is an illustration of white and red blood cells. Select the type of cell that can provide individual evidence.

Which direction was the blood traveling in the following photo?

⬆️ 

⬅️ 

⬇️ 

➡️ 

Blood that was once present in the sink and washed away can be detected using _____________.

an ELISA test

luminol testing solution

Kastle-Meyer reagent

ferric chloride solution

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

gravity

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

cohesion

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

adhesion

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

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

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

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

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

cast-off patterns indicate where to locate a moving victim

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.

dried blood on a sock

liquid blood evidence

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

wet bloodstain on a pillowcase

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

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

antibody-antigen test

laser pointers

trigonometry

string method