Soil evidence
The horizon of soil that is modified by anthropogenic practices. Contains higher organic carbon content.
What is Horizon A: top soil?
Three things needed for combustion.
What is fuel, oxygen, and heat?
The three inorganic components of GSR.
What is lead, barium, and antimony?
Describe the differences between the driver and passenger side air bag.
What is round versus rectangular?
Drugs that depress the CNS; reduces pain.
Opiates such as morphine, heroin, codeine, oxycodone, fentanyl.
What is Narcotics?
A measure of strength and cohesion of a soil. The magnitude of force needed to cause disruption or distortion.
What is Soil Consistency?
An extremely rapid oxidation reaction with a high-speed shock wave, faster than the speed of sound.
What is detonation?
Minute imperfections found on the rifling cutter's surface. (individual characteristic)
What is striations?
How long is a VIN? and what numbers are not used?
What is 17 numbers long, and I, O, Q?
Name some Hallucinogens
What is marijuana, LSD, PCP, and ecstasy?
The percent composition of clay/slit/sand.
What is soil texture?
A class of explosives that progress at a speed of deflagration. Only detonates when confined.
What is low class explosive?
What is gauge?
Contains a rough/pitted filament with possible sag. Has darkened glass and a discoloured base.
What is an aged lamp?
The colour that heroine turns in the Marquis test.
What is purple?
The soil structure composed of vertical axises, bound by flat vertical surfaces.
What is Prism-like soil structure?
The main structural components of an explosive. (think elements!)
What is carbon, nitrogen, hydrogen, and oxygen?
The maximum time for which GSR analysis should be collected?
What is 3 - 6 hours?
Excessive stretching of the lamp filament.
What is filament burnout?
The drug that produces an olive green colour in the Mandelin test.
What is amphetamines?
1) colour frequency ranging from red to yellow
2) lightness from white to black
3) degree of colour saturation/intensity of hue
What is hue, value, and croma?
A main (and stable) component of an IED.
What is ammonium nitrate?
Test on GSR for nitrates and nitrites.
Conditions if light was on during accident?
- Filament is bent/twisted/stretched
- Glass adheres to filament
- Presence of oxides on filament
The color change for morphine in the Nitric Acid test?
What is orange-red-yellow?