WorksheetsFSci Casts and Impressions
Total questions: 23
Worksheet time: 12mins
Class characteristics of shoe prints include:
manufacturer, tread, model, and size
color, material, scent, and scratches on the bottom
depth of tread, position, quantity
accidental scratches, embedded rocks or debris
Consistent bite mark evidence alone is not sufficient for a conviction, but it does provide ________________ evidence that may be helpful in building a case.
class
individual
trace
circumstantial
Which of the following describes the area of a tire tread that makes contact with the road?
Groove
Rib
Ridge
Valley
A shoe print left in snow is an example of
Patent impression
Virtual impression
Latent impression
Plastic impression
Which of the following is not one of the 3 types of tire marks?
Skid marks
tire scrub
tread marks
yaw marks
What does not influence a skid marks creation during a stop from slamming the breaks?
Vehicle Speed
Distance of the Skid
Coefficient of Friction
Mass of vehicle
Bite marks are considered unique and enough evidence to accurately convict a suspect with.
True
False
What is the first step of processing any kind of evidence?
Casting
Photographing
Dusting
Lifting
Several prints together can help us determine...
Gait
Height
Race
Age
Which characteristics DOES NOT indicate someone that is wounded?
more pressure on one foot
foot drag
irregular gait
irregular wear pattern on one shoe
more pressure on heel of foot
What is the function of tire treads?
to provide contact with the road
to channel air and water from tire
to provide evidence about type and size of tire
to provide even acceleration and braking for a car
What are the two main types of tires
snow and all-weather tires
touring and off-road tires
front and rear
treaded and smooth
Track width of a car can be determined by measuring
the distance between the edges of the right and left tire
the distance from the front to rear axel
the distance between the mid points of the front tires
the distance between the inner edges of the front and back tires
The car with the smallest turning diameter would also have
the largest track width
the smallest track width
the largest wheel base
the smallest wheel base
In order to take a tire impression of a suspect's vehicle, how long of a piece of paper/cardboard must be used to ensure the entire tire is printed?
2 feet
3 feet
2 yards
3 yards
Skid marks are formed when
brakes are applied
tires lock
two cars make impact
a car accelerates rapidly
Tire marks formed when a car moves in a curved path faster than the vehicle can handle are called
yaw marks
skid marks
scrub marks
slash marks
Tire marks used for calculating velocity of a vehicle are
yaw marks
skid marks
scrub marks
slash marks
Tire mark patterns that have with curved or irregular width are usually associated with
sudden braking
damaged or overloaded tires, or tires during impact
melted road surfaces from extreme heat
ABS braking
When a car traveling at a high speed brakes suddenly, the front tire tracks appear as
skids that correspond to the ridges of the tire
on long, central tread
thin lines at either edge of the track
skids that correspond to the indentations of the tires
What is the braking efficiency of a car with only brakes on the right side of the car?
40%
50%
60%
75%
Which surface has the highest average coefficient of drag?
asphalt
rock or gravel
snow
ice
Which of the following produces latent prints in a tire track?
paint
tar from asphalt
oil added during manufacture of the tire
rubber from a skid mark
