CSI Web Adventures: Rookie Training
Go to http://forensics.rice.edu/ and click the section for “Case One: Rookie Training”
to find the answers to complete this worksheet. You should register in case you don’t
finish the case during class. Click “Play game”. As you complete the different sections,
you might want to answer the quiz questions found at the bottom.
1. Go to the “Firearms & Tool Marks” section and choose “Training Demos” to
answer these questions.
A.
Parts of a Gun
Where do you find rifling on a gun? _________________________________
What is found in the magazine? ________________________________
B. Part of a Cartridge
What produces the spark to ignite the gunpowder? ______________________
What measurement is used to determine the caliber? ___________________________
C. Bullet Characteristics
What term refers to tiny, microscopic scratches on the surface of a bullet? _____________________________
What is a rifling impression? _________________________________________________________________
Firing Range - Answer the questions by “shooting” the correct answers. What was your score? __________
Evidence Analysis
What is the caliber of the bullet? ____________ What kind of rifling is on the bullet? ___________________
What is its rifling number? ___________ What type of gun was used to shoot this bullet? __________________
Which suspect’s gun was used to shoot the bullet? _________
2. Choose the “Medical Examiner” section to answer these questions.
What is the first thing an examiner does when a person arrives for autopsy? _______________ _____________
Try the autopsy and follow the directions to complete it.
What was the cause of death in this case? ___________________ _____________________
What percentage of deaths is accidental? ________% What percentage is due to homicide? _______% What
was the manner of death for each case?
#6877 __________________ #11989 __________________
#23380 _________________
#4775 __________________ #94575 __________________
3. Choose the “CSI Ethics” section to answer these questions.
Forensic scientists must be _____________________, ____________________, ____________________, and
____________________.
Answer the questions to finish this section.
4. Go to the “Toxicology Lab” section and choose “Learn About The Lab” to answer these questions.
What do forensic toxicologists do? _____________________________________________________________
How much of each is needed for testing? ______ of vitreous humor, _____ of blood, and ______ of urine
What else might be tested? _______________________ or ________________________________
Sort the evidence into the three boxes. What was your time? ______________
What instrument is used to screen for alcohol? ____________________________________________________
What test can tell us if certain drugs are in a sample? ________________________
What does the GC/MS instrument do? ___________________________________________________________
Complete: Every __________________ has its own specific pattern of ________________.
What chemicals were found in the blood sample? __________________and ___________________________
Take the survey by clicking on the computer.
5. Go to the “Forensic Biology” section and choose “Follow Greg” to answer these questions. A.
What is DNA? Answer these questions as you work through this section.
What does the abbreviation DNA represent? _________________________________ _________
Where is the DNA located in a cell? ________________________ Choose
the three correct about DNA.
How can forensic scientists use DNA in a crime? ________________________________________________
Which suspect matches the sample from the crime scene? ________________________
B. What is a DNA Profile? Answer these questions as you work through this section.
Complete: A DNA profile is a _______________ of one person’s genetic information.
What does CODIS represent? ________________________________________________________________
How many markers are used to make a DNA profile? ________
C. How do you process DNA? Answer these questions as you work through this section.
What are the four steps in processing DNA? _____________________________________________________
What is used to collect a DNA sample from Greg? __________________ Where? _________________
What technique is used to copy the DNA markers? _________________________________________________
What does the Genetic Analyzer do? ____________________________________________________________
Follow the steps to process the DNA sample.
Click Begin Analysis and follow the steps. Which DNA profile matched the sample? ________ Complete
the Exit Exam.
QUIZ QUESTIONS
FORENSIC BIOLOGY
DNA is located in the _______of a cell.
a)
b)
c)
d)
Mitochondria
Golgi apparatus
Nucleus
Vesicles
All of the following would have different DNA, EXCEPT:
a)
b)
c)
d)
mother and daughter
fraternal twins
an older brother and a younger brother
identical twins
Forensic biologists compare DNA samples by looking at how many markers?
a)
b)
c)
d)
7
10
13
21
The PCR technique:
a)
b)
c)
d)
makes DNA grow a lot faster than it usually does
makes millions of copies of the DNA markers
uses a machine to match two DNA profiles
is part of the Extract step of DNA analysis
The four steps of DNA processing are:
a)
b)
c)
d)
Extract, Sort, Analyze, Compare
Extract, Amplify, Separate, Analyze
Duplicate, Separate, Analyze, Sort
Extract, Amplify, Assemble, Compare
TOXICOLOGY LAB
Vitreous humor is found in the:
a)
b)
c)
d)
nose
elbow
knee
eye
What does SCREENING test accomplish?
a)
b)
c)
d)
tells you what specific drug was in the victim
finds evidence by looking inside the stomach
checks for the presence or absence of chemicals
tests whether you should be a toxicologist or not
What happens to a chemical when it is analyzed by the Gas Chromatography/Mass Spectrometer
(GC/MS)?
a)
b)
c)
d)
It is broken into fragments which are each counted to create a graph
It dissolves in a liquid which then is tested with iodine
It is added to other chemicals to create a chemical reaction
It is vaporized to analyze the chemical as a gas
A mass spectrum of a chemical:
a)
b)
c)
d)
will match the mass spectra of other chemicals
will be unique, unlike the mass spectrum of any other chemicals
is very small and must be duplicated several times to be analyzed
is not a reliable way to compare chemicals
How do CSIs ensure that evidence does not get tampered with?
a)
b)
c)
d)
Everyone promises to not contaminate the evidence
A security guard watches the evidence box at all times
No one is allowed to handle the evidence except the Supervisor
Anytime someone examines evidence, they must sign a Chain of Custody form
What is a positive control?
a)
b)
c)
d)
a sample prepared by the toxicologist which has a specific chemical present
a sample prepared by the toxicologist that does not have any chemicals in it
a sample with any chemical in it
a sample with human blood
FIREARMS AND TOOLMARKS
The _______marks the bullet with the gun’s unique characteristics.
a)
b)
c)
d)
Magazine
Firing pin
Prime
Rifling
What is the caliber of this bullet?
a) 9mm
b) 20mm
c) 115 gr.
Weight = 115 gr.
9mm
20mm
Where do investigators test fire a suspected gun in order to get individual characteristics of the gun?
a)
b)
c)
d)
In an iron box
In a water tank
In a big empty room
In a steel tube
What equipment do investigators use to analyze striations on bullets?
a)
b)
c)
d)
Light table
Magnifying glass
Comparison microscope
Super-glue fuming chamber
A 9mm bullet was collected from the victim, and two firearms were found at the crime scene. Both gun 1
and gun 2 use 9mm bullets. How can the investigators determine which gun fired the bullet?
Taurus gun 1
a)
b)
c)
d)
Taurus gun 2
Compare the fingerprints on the bullet with those found on gun 1 and gun 2
Identify the rifling pattern on the bullet and match it to gun 1 and gun 2
Contact the gun manufacturers, and see which one also produces the same type of bullets
Test fire the suspected guns and compare the bullet striations to the fatal bullet.
MEDICAL EXAMINER
Which of the following is NOT determined by a medical examiner?
a)
b)
c)
d)
Cause of death
Manner of death
Time of death
Place of death
An internal autopsy always begins with a ___________.
a)
b)
c)
d)
T-incision
Y-incision
X-incision
Z-incision
During an autopsy, the examiner sticks the syringe into __________to collect a blood sample for further
analysis.
a)
b)
c)
d)
The liver
The stomach
The heart
The lungs
The term “rigor mortis” refers to:
a)
b)
c)
d)
The death of a person.
The Latin word for “responsible for death.”
The body’s muscles stiffening after death.
The body temperature of a deceased person.
Where does a medical examiner measure the body temperature of a dead person?
a)
b)
c)
d)
The ear
The arm
The liver
The forehead
There are three important things a medical examiner looks for when determining the time of death.
Which is NOT one of them?
a)
b)
c)
d)
Odor mortis
Algor mortis
Livor mortis
Rigor mortis