Interrogation 101
How Chemistry Fights Crime
Fingerprinting
Hair Analysis
Handwriting Analysis
100
This is the best way to question two suspects in the same crime.
What is alone?
100
A term for the analysis of a mixture by separating out individual components using a filter and seeing how the components move at different rates.
What is chromatography?
100
This is the term for the study of fingerprints.
What is dactyloscopy?
100
In order to test a hair sample for DNA, this must be present.
What is the root?
100
Suspects will often try to disguise their writing style, so it is often best to obtain this type of sample.
What is a natural sample?
200
How a person behaves during questioning is known as this.
What is nonverbal communication?
200
Phenolphthalein solution is an example of this.
What is an indicator?
200
These are the three main types of features in a fingerprint.
What is loop, whorl and arch?
200
This is the name for the structure that the hair grows from.
What is the follicle?
200
This term refers to how a person's writing sits in relation to the lines on the paper.
What is the baseline?
300
When you see a crime happen, you may be asked to do this.
What is an eye witness account?
300
A set of numbers from 0-14 that explain how acidic or basic an item is.
What is the pH scale?
300
This is a term to describe fingerprints that are invisible to the naked eye.
What is latent?
300
These are the three main parts of a hair.
What are the cuticle, the cortex, and the medulla?
300
Trying to pass off your writing as someone else's is known as this.
What is forgery?
400
These are three common signs of deception when looking at a person's eyes during questioning.
What is avoiding eye contact, blinking often, and dilated pupils?
400
Bleach and blood are examples of these.
What are bases?
400
There is a one in __________ chance that your fingerprints will match someone else's.
What is 64 billion?
400
Hair is composed of this protein, which also makes up finger and toe nails.
What is keratin?
400
This is the term for the science of handwriting analysis.
What is graphology?
500
Evidence gathered that may be common between many suspects, or that needs to be combined with other evidence in order to be useful, is known as this.
What is circumstantial?
500
This is what pH stands for.
What is presence of Hydrogen ions?
500
This is a term for the science that uses physical characteristics to help identify people.
What is biometrics?
500
Hair shape and texture are heavily influenced by this.
What is genetics?
500
These are the four letters most commonly analyzed when looking at handwriting.
What are "i", "t", "r", and "e."
M
e
n
u