What is the barrel of a gun also known as?
A.
rifling
B.
caliber
C.
bore
D.
gauge
C. bore
What do shots fired at a target from a distance of one inch or less leave behind?
A.
a halo of smoke around the bullet hole
B.
a circle of lead concentrated around the bullet hole
C.
no signs of gunpowder residue
D.
distinct striations
B. a circle of lead concentrated around the bullet hole
Why would an investigator never take a tool suspected of being used at a crime scene and try it out in a tool mark to see if it fits?
A.
It could leave fingerprints.
B.
It could damage the tool.
C.
It could leave a residue.
D.
It could alter the original tool mark.
D. It could alter the original tool mark.
Darius is studying a corpse who died standing up. He notes that dark discoloration on the soles of their feet beginning to become apparent. If he had to guess when the person died based off just that information, what would be his BEST guess?
A.
less than 10 minutes ago
B.
less than a half hour ago
C.
about two hours ago
D.
about 12 hours ago