MiniCase5_Crime Scene Sketching

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1 KIS International School Science 2010

1. The Power of WordsObserve (v)to notice or perceive (something) as being significant, or important

The biologist observed the behavior of the alligator forseveral minutes.

Step 1. Copy the above word into your Vocabulary Book.

Step 2. Complete the activity on the back of this page.

CSI:THE CRIME SCENE SKETCHTodaysTasks1. Power ofWords

2. Pre-Lab

3. Lab

4. Post LabQuestions

ATL

Connections

- Communication

- Information

Literacy

- Collaboration

ATLs

Communicat

ion

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ObserveWrite a complete sentence about the cartoon above using the wordObserve.

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Write your own sentence using the word observeandsuspect.

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The Power of

WordsAnswer the following in completesentences.

ATLs

Commun

ication

CSI:THE CRIME SCENE SKETCH

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2. Pre-Lab TasksI need to know. . .

BackgroundThe art of forensic science begins at the crime scene. It is very important to protect and

secure the area where the crime took place to ensure that evidence is not destroyed.

Investigators carefully comb the crime scene for clues and evidence that later may be used

in a court. In order to record the crime scene, notes are taken, photographs are made, and

sketches are done. Photographs are usually the best record of the scene. However, there

are times when good photographs are not possible because of environmental restrictions.

In such cases, sketches and notes must be very detailed.

When possible, the crime site and adjacent locations are photographed before any other

investigative work is done. All victims are photographed as they were found. The size of a

body and other items are determined by placing a ruler in the photograph. Some larger

police departments are replacing photography with videotaping of the crime site.

Scene SketchOnce the photographer has completed his or her job, the crime scene investigator makes a

sketch of the crime scene. The initial sketch he or she makes is a rough sketch that

accurately represents the dimensions of the scene and shows the location of all objects

that may be important in the case. These objects, which help to establish that a crime was

committed, are called physical evidence. To give his or her sketch scale, the investigator

selects two fixed points (cannot be moved) at the crime scene. In a room, these may be

the corners, windows, or doors. The investigator uses a tape measure to determine the

distance of each important object in the room from both of these fixed points. These

distances are recorded in the sketch (Figure 1).

Once the locations of the objects have been recorded, each object is assigned a letter.

At the bottom of the sketch, these lettered objects are identified using a key. The sketch is

also oriented to the North (Figure 2). Later, a finished sketch is drawn from this rough

sketch by a skilled artist. This finished sketch reflects information in the rough sketch, but

is much neater (Figure 3). It may be used as evidence in the courtroom during a trial.

Note It

Notes are also taken at the scene of a crime that describes all physical evidence in detail.Notes include information about who discovered the evidence, the time that it was

discovered, and how the evidence was collected and packaged. Notes must be very

detailed in case they are needed to refresh someone's memory years after a crime has

been committed.

ATLs

InformationLiteracy


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Pre-Lab TasksI need to know. . .

ATLs

InformationLiteracy

1.! In Figure 1, use a ruler to measure how far the head is from thenortheast fixed point.

2.! In Figure 1, use a ruler to measure how far the head is from thesoutheast fixed point.

3.! What information do we need to know in order to determine how far thebody really was from the corner of the room?

Figure1

Aninvestigatormeasuresthedistancebetween

apieceofevidence,andtwofixedpoints.


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ATLs

InformationLiteracy

Figur

e2

Asketchis

orientedtotheNorth,andlabelsobjectsanddistances

.


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ATLs

InformationLiteracy

4. Use Figure 2 to fill in the following table:

5. In Figure 2, what does upturned chair mean, and why do you think it's important?

! ______________________________________________________________! ______________________________________________________________! ______________________________________________________________6. In Figure 2, how many windows do you see in the crime scene?

! ______________________________________________________________! ______________________________________________________________7. Describe what could have happened in this scene. Write at least 40 words.

! ______________________________________________________________! ______________________________________________________________! ______________________________________________________________! ______________________________________________________________

Figure 2 - Crime Scene Sketch Distances

Points Distance (cm)

A to NE Corner

B to SW Corner

Upturned Chair to Window

80


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ATLs

InformationLiteracy

Figure3

Thefinish

edCrimeSceneSketchisd

rawntoscalecorrectly

toscale,andismuchneaterthanthe

roughsketch.


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ATLs

InformationLiteracy

8. What is the scale that is used in Figure 3?

9. In Figure 3 match the letters to the following objects:

10. Describe at least two differences between Figures 2 and 3.

! ______________________________________________________________! ______________________________________________________________Complete the outline of the information using these words:photographs, rough, scene, fixed, secure, adjacent, ruler, sketching, objects, trial

I. Crime Scene Basics A. Protect and ___________________ the area B. Take ___________________ and complete sketches as necessaryII. Photographing the Crime ___________________ A. Photograph crime location and any ___________________ locations B. Photograph should include ___________________ for determining sizeIII. ___________________ the Crime Scene: Two Types of Sketches A. ___________________ Sketch i. includes dimensions ii. shows location of all ___________________ iii. includes two ___________________ points B. Finished Sketch i. is much neater than rough sketch ii. may be used in courtroom during a ___________________

Figure 3 - Imp rtant Objects

Object LetterTable

D

Television on Table

J

Gold Earring


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ATLs

Collaboration3. The LAB

On the Scene: RoughSketching1. Record the measurements of the

room from the board. Make a

rough sketch of the room on the

next page. Make sure to label the

lengths and distances.

2. With your group measure thecrime scene, and add details to

your sketch. Make sure to include

important information like windows

and doors, and all objects of

importance (with measurements to

On the Scene: ObservationYou will have 2 minutes to observe

the crime scene.

Try to remember as much as you can

about the crime scene.

After your observation answer the

following questions.

1.! What color shirt was the victim wearing?2.! Did the shirt have any writing on it? If so, what did it say?

3.! What kind of shoes was the victim wearing? What color?

4.! Did the victim have any jewelry on? Watch? Necklace? Bracelet?

5.! What was the victim holding in his hand? In which hand was it being held?

6.! What else can you remember about the victim?


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Evidence

ATLs

Collaboration

Crime Scene Sketch

After the Scene: Final Sketching

- Using graph paper, make a final scale drawing of the Crime Scene.- Use a scale of 1m : 50 cm (this means 2 boxes 1 meter).

- Make sure to include a key.

- Orient your drawing to the North.

KEY


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MiniCase5_Crime Scene Sketching

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