Additional Evidence

What is it called when investigators separate the different colours from the ink in a pen?

• Ink analysis

• Fingerprinting

• Chromatography

• Fabric analysis

True or false: Different areas have different soil types

• True

• False

What type of fibres do not usually burn if ignited (lit on fire)?

• Natural

• Synthetic

• Composite

True or false: Cotton is a natural fibre

• True

• False

A lab technician wanted to determine whether a fabric sample was made from natural or synthetic fibres. What could they do to test this?

• Light a small portion of each fabric on fire to test their flamability

• Examine the thread patterns on each

• Compare them to clothes they have

• Ask the suspects

At a crime scene, the least likely place that a forensic scientist would find cloth fibres is on:

• A rug

• A couch

• The roof

• The floor

All are qualities investigators look for in fabric samples except:

• Stretchiness

• Texture

• Price

• Colour

Select all the options investigators look for in a fabric sample:

• Wrinkle tendnecy

• Colour

• Smell

• Price

• Stretchiness

What is the responding variable (what you are measuring) in the test above?

• Colour of the pen

• Type of filter paper

• Separation of the ink

• Length of the paper

What is the manipulated variable (what changes) in this experiment?

• Type of marker tested

• Volume of water used

• Length of line placed on paper

• Separation of the ink