Firearms
This part of a firearm is made from a solid piece of steel.
What is the barrel?
Tool marks and impressions are examples of this principle, the basis for forensic science.
What is Locard's Exchange Principle?
This is the basic measurement of mass.
What is the gram?
This type of glass shatters into fragments or small squares.
What is tempered glass?
Lead, antimony and barium found in this can be used to determine the person who fired a gun.
What is the primer residue?
Barrel rifling shapes the inner surface with a spiral pattern of these.
What are lands and grooves?
This material can be used to lift tool marks from door frames when the whole frame cannot be removed.
What is silicone casting material?
1 cubic centimeter is equivalent to this unit of volume.
What is the milliliter?
This type of glass is often found in automobile windshields.
What is laminated glass?
What is firing distance?
No two rifled barrels have identical these.
What are striation markings?
Instrument used for looking at striation patterns to determine if a tool mark was left by a suspect tool.
What is a comparison microscope?
The smallest particle of matter.
What is an atom?
A glass crack that forms a rough circle around the point of impact is called this.
What is a concentric fracture?
These two physical properties are most widely used for characterizing glass.
A strike to this part of a bullet by the firing mechanism creates a sparks which ignites the gunpowder.
What is the primer?
Unique wear patterns on shoes and tires are examples of these.
What are individual characteristics?
Color, volume, density and boiling point are examples of these types of properties.
What are physical properties?
What is solid container or cardboard box?
Radial cracks from a right angle on the reverse side of the force is known as this.
What is the 3R rule?
This long-gun has a smooth barrel.
What is a shotgun?
These two things are used to preserve tire marks or footprints found in soft dirt.
What are photographs and dental castings?
This is the bending of a light wave as it passes from one medium to another.
What is refraction?
These two compounds are added to glass in the manufacturing of most windows and bottles.
What are soda (sodium carbonate) and lime (calcium oxide)?
The bright halo that is observed near the border of a particle immersed in a liquid of a different refractive index.
What is the Becke Line?