AC1.3 Explain how evidence is processed Save
Terms in this set (18)
*What happened?
He was convicted of the murder of Jill Dando (she was shot) but
after two appeals and 7 years in prison, his conviction was
quashed.
*Type of evidence
Physical- ballistic
Physical evidence: Ballistics:
Barry George case *How was it used?
, *Each gun leaves a signature marking on the bullets that are fired
from it due to ridges and grooves inside. Can analyse these
Physical evidence: Ballistics: how
markings to see if the same weapon was used.
is it analysed?
*These markings are stored on a database to make it easier to see
if the same firearm was used in multiple incidents.
*Images of the bullet holes are taken.
*Look for potential firearm left at the scene, cartridge cases,
Physical evidence: Ballistics: how projectiles (e.g. bullets).
is it collected? *Measure the fly path of the bullet by using a long metal rod which
is inserted through any holes left by projectiles. Helps locate them
and gives rough idea of where the weapon was fired from.
*Where the shots were fired from, rough height of offender.
Physical evidence: Ballistics: what
*Bullets can indicate what gun was used.
can it tell us?
and whether or not it was used in another crime.
*Fingerprint analysist- scans the prints into the fingerprint data
base which will reveal a match if the offender's fingerprints are in
Physical evidence: Fingerprints:
the data base.
how is it analysed?
*Final decision about whether there's a match is made by the
fingerprint analysist and not the computer.
*Hands always exude sweat and oils from the pores so fingerprints
Terms in this set (18)
*What happened?
He was convicted of the murder of Jill Dando (she was shot) but
after two appeals and 7 years in prison, his conviction was
quashed.
*Type of evidence
Physical- ballistic
Physical evidence: Ballistics:
Barry George case *How was it used?
, *Each gun leaves a signature marking on the bullets that are fired
from it due to ridges and grooves inside. Can analyse these
Physical evidence: Ballistics: how
markings to see if the same weapon was used.
is it analysed?
*These markings are stored on a database to make it easier to see
if the same firearm was used in multiple incidents.
*Images of the bullet holes are taken.
*Look for potential firearm left at the scene, cartridge cases,
Physical evidence: Ballistics: how projectiles (e.g. bullets).
is it collected? *Measure the fly path of the bullet by using a long metal rod which
is inserted through any holes left by projectiles. Helps locate them
and gives rough idea of where the weapon was fired from.
*Where the shots were fired from, rough height of offender.
Physical evidence: Ballistics: what
*Bullets can indicate what gun was used.
can it tell us?
and whether or not it was used in another crime.
*Fingerprint analysist- scans the prints into the fingerprint data
base which will reveal a match if the offender's fingerprints are in
Physical evidence: Fingerprints:
the data base.
how is it analysed?
*Final decision about whether there's a match is made by the
fingerprint analysist and not the computer.
*Hands always exude sweat and oils from the pores so fingerprints
