Science Skills
An educated guess as to what happened
An inference
The size of a footprint can be a good indication of this unless you are examining younger people.
The height of a person
What fingerprints are made up of
Are ridges
Using characteristics like absorbency and flammability
Fabric analysis
3 characteristics of a person's writing that can be analyzed
Line quality, spacing, ratio of height width and size
When the scientist uses his/her senses to record what is happening in an experiment.
An observation
This includes mud, sand, dirt, snow...
Trace materials
Dividing prints into loop, whorl, arch, or composite
Categorizing prints
Two tests that can be done on fabric NOT done in class
Dye test and burn test
The manipulated variable in a chromatography experiment
The pen ink samples
The steps involved in carrying out an experiment or test.
Procedure
A footprint characteristic that can tell you whether the person was running or walking.
Stride length
A fingerprint pattern in which the ridges start on one side of the finger and finish on the other side of the finger.
An arch
The experiment done to match an ink sample with a suspects ink sample
Chromatography experiment
The responding variable in a chromatography experiment
The separation of ink (color and attractiveness to water)
Completed at the beginning of a test or experiment - helps to connect what the scientist already knows about the question.
Hypothesis
A design on the bottom of a shoe.
Tread pattern
Fingerprints match when they have this many common characteristics
8
Statements that investigators get from people who may have been involved in, or know about a crime
Witness statements
The word for handwriting analysis
Graphology
The variables in an experiment that are kept the same.
Control or constant variables
A chart used to identify and separate different types of shoes. This can also be used for other applications.
Dichotomous key
This is what causes our fingerprint pattern to transfer onto objects we touch
Oil, sweat, and amino acids
pH is a characteristic of soil that can found using this test
Bromothymol blue test
A black pen would result in (these) colors in a chromatography experiment
All colors