What colored stoppered tube should be used to collect a sample for blood alcohol testing

15;

To make sure the subject is not vommitting or eating because it doesn't represent deep lung air (highest concentration that is represented in the blood)

Discovered that there is an exchange of materials when two subjects (people) come into contact with each other

True or False:

The Net weigth of a controlled substance, includes the weight of the drug and its packing

Name three most common latent prints patterns?

Which one one of the three is teh most common?

1)loop

2)whirl

3)arch

Loop most common

A finger print not visible with teh naked eye adn some type of means is required to identify it. 

Ex. A fingerprint left in a door

A fingerprint left in a pliable surface

Ex. A fingerprint left in clay

A fingerprint that is visible to the naked eye.

EX. A fingerprint left in blood

1)always remeber to air dry

2)grab evidence from the least touch area

3)package items seperately

4)store items in room temperature

What is a substrate control?

Why is it important to collect?

An apparently unstained area, as close to the stain area.

*Important in able to identify the offender profile

What does CODIS stand for?

What type of information goes into it?

Combined Offender DNA Index System

1)solved and unsolved DNA

2)offender profiles

1)limit access to scene

2)change gloves frequently or between samples

3)don't cough, sneeze or talk

True or Flase:

A bullet can be identified as having been fired from one particular firearm if enough class characteristics agree?

False

It eliminates a class characteristic

True or False:

Charred or melted fabric on the shirt of a gunshot victim is indicative of a contact wound

1)direction of twist (left to rigth)

2)land width

Class: it can exclude a firearm but not identify the firearm

Individual: imperfections caused accidental by the manufacture or/and by use, corrosion or damage

1)Oxygen

2)Heat

3)Fuel:petroleum, wood or anything that burns

What is Spontanious Combustion

Ex. ??

A fire caused by a natural heat; producing process in the presence of sufficient air and fuel

*Wet hay & bacteria

*Highly unsaturated oils; linseed oil

*Bucket with rags

Is where the fire starts

*usually in the lowest point showing the most intense characteristics of burning

V-patterns: 

*wide V slow build up

*narrow V fast build up

1)sample of where it started

2)sample of least burned area (control)

• KA-PAK plastic bags
• Canning jars
• Sample bottles with teflon linen lid

1)cell phones

2)computers

3)GPS devices

True or False:

Legal authority to search must be provided in order for examination to be conducted on mobile devices

True

Exception: prisoner with a phone

True or False:

Is there a single hardware/software tool that can acquire all data from all mobile devices?

1)XRY

2)EnCase 6

3)EnCase 7

4)Secure view

1)SIM

2)Handset

3)Memory card

1)Code Division Multiple Access (CDMA)

2)Global Systems of Mobile Communication (GSM)

To prevent it from loosing data:

1)Remote wiping

2)Data displacement

3)Any changes to the phone

• cell jammer: Powered on
• airplane mode: Powered on
• remove the battery: Powered off

True or False:

Is it important to consider safety first when collecting evidence

True or False:

Is it important to examine digital devices for other possible evidence- such as fingerprints, blood, hair, fibers, tissue, etc. that may be relevant to the investigation

Store the evidentiary device in the sample liquid it was found

*If the battery is found in the device, remove the battery from teh device yet store it in the same liquid it was found, but in a seperate container

True or False:

If the device appears broken or damaged, then the evidence has been destroyed

False

Mobile devices exposed to various conditions can still possibly contain digital evidence

True or False:

If the cell phone is locked or passcode protected, guess at the passcodde until you figure it out?

False

It gets locked

*May get deleted data, obtain data that can be decoded, and "raw" non-decoded data not viewable on the device

*Will get "visible"data on the device (call logs, contacts, SMS mesages)

• gravity propelled
• drip

• bludgeoning, beating
• cast off

• gunshot machinery

an edge characteristic of bloodstains composed of small projections directed away from teh center of a bloodstain

Used to recreate the area from photographs

*doesn't have to be a perfect square

True or False:

Pointed end always faces it's direction of travel?

• Digital Single Lens Reflex Camera

*the reflex mirror reflects the light from the lens to a ground glass viewing screen on which you focus and compose

Film v. digital:

advantages & disadvantages

• Advantages: cost savings (no film, no chemistry, less manpower)
• Disadvantages: more expensive

• Internatinal Standard Organization

*digital cameras relate teh sensitity of their sensors to light by using the  same ISO equivalent to film

refers to how your camera reads adn adjusts to the temperature of the light.

*every light source has a diferent color or temperature to them 

1)Program mode

2)Shutter priority

3)Shutter speed

4)Aperture priority

• The camera does it all
• it sets the aperture adn shutter speed for you, just point & shoot

• you see the shutter speed
• camera sets f/stop
• use this setting to stop action or purposely blur the image

Electronically controleed vertical focal plane shutter

• You adjust the aperture, the camera sets the shutter speed
• you increase or decrease the depth of field in your photographs by changing the aperture setting on your camera
• aperture changes are measured in f-stops

are the widest possibel views of the entire scene.

*first with stands then 2nd shot with stands

these shots show key pieces of evidence in context, so the photo includes not only the evidence but also its location in a room and its distance from other pieces of evidence

finally, document evidence with close-up photoraphs

*can include fingerprints, blood stains or bullet holes

*use a scale in close ups & without