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Monday, May 20, 2019

The case of the Barefoot Burglar | Home Chemistry





In groups of 3, you are going to need to use your forensic knowledge to solve a crime. You must use the web page: Barefoot Burglar Evidence

  1. Determine which of the four suspects is the "Barefooted Burglar"? 
  2. What do you think was the motive for this crime? 
  3. Write the results of your findings and convince a jury of your peers


The Crime

At approximately 7:15 a.m., Friday morning, Mrs. King, the science teacher, thought something was fishy as she walked down the hall and noticed that her door was open. She walked into her classroom and immediately discovered that the small aquarium had been broken and her prized goldfish were gasping in the sink. Beside the broken aquarium were the shattered remains of the pink piggy bank that had been on the shelf above the aquarium. A can of blue paint was spilt on the floor. Footprints of a barefooted burglar led to an open window. Bits of a white powdery substance was found next to the broken, empty, piggy bank. The only other item found was a half-eaten large chunk of chocolate candy.When the police arrived they immediately began to gather forensic evidence.

When the police arrived they immediately began to gather forensic evidence.
  • Sticky fingerprints were lifted from the aquarium and piggy bank. The painted footprints were measured. The chunk of chocolate candy was collected for examination. It appeared there were teeth imprints.
  • The white powdery substance by the piggy bank was carefully placed in a plastic bag and taken to the forensic chemist for identification.


Jake the Jock

Height 201 cm
Alias: Armchair Quarterback

                                                                                         
Jake the Jock is known for quoting statistics on every sport from boomerang throwing to sledge dogging. His neighbours report that he is the neighbourhood pitcher for baseball games. Last year a baseball hit him in the mouth and knocked out his front tooth. This has cramped his eating style of chocolate chunks, candied apples, and corn on the cob. His wife claims that on the morning of the crime Jake was rubbing his hands with cornstarch to keep them dry in preparation for an important baseball game.
Dan the Man
Height : 176 cm
Alias: The General
Dan was wearing a woolen general's uniform with small holes when apprehended in the woods. He claimed to be gnawing on wood for moisture and insects to practice his survival training. His teeth look like a beaver from gnawing. His wife complains that she never has any baking soda due to Dan's compulsion about storing clothes in mothballs. He thinks the baking soda takes away the mothball smell, so he stuffs his pockets with the substance. Also, his wife reports that her giant chocolate kisses continually disappear from the candy cupboard. He blames their dog Patton, an English bull terrier, who patrols the neighbourhood. His neighbours report that Dan loves the military. He was very regimented about playing taps on his bugle every day at sunset until an irate neighbour broke his bugle. Dan has been trying to save money for a new one.
Peg the Leg
Height: 152 cm
Alias: Lucky Lady
Peg is a librarian known for hanging horseshoes and four-leaf clovers in her library. Employees say she is so superstitious she insisted on carpeting in the library instead of laying tiles so she would not step on the cracks. She wraps construction zone tape around open ladders so no one can walk under them. Cola bottles litter her office, which she drinks with chocolate chunks. Her teeth are chipped from knocking the bottles against them. She is always throwing salt over her shoulder for good luck and keeps a salt shaker in her purse. Her alibi is that she was busy closing open umbrellas the morning of the crime.


Lou Lou
Height: 160 cm
Alias: Sweet Tooth
Lou Lou is so addicted to sugar that she never leaves home without it. She loves to bake sweet things and has an entire pantry full of sugar bins. She claims to have been baking her famous chocolate chunk cookies the morning of the crime (although not a morsel of cookie or chocolate chunk was left when the police arrived.) Lou Lou rarely wears shoes, which often causes her to slip and break things, especially her collection of ceramic pigs.

Evidence:
  • Fingerprints: Sticky, 'swirl' fingerprints were lifted from the aquarium and piggy bank. 
  • Footprints: The painted footprints were measured and were for 26 cm feet. 
  • Teeth: The chunk of chocolate candy was collected for examination. It appeared there were teeth imprints.
  • White Powder: The white powdery substance by the piggy bank was carefully placed in a plastic bag and taken to the forensic chemist for identification. It had very small grains and when mixed with Iodine it reacted making the colour brown. It did not have a smell.

Example:

Name: Dave
                        
Fingerprints: No.
Mouth prints: Has a chipped tooth.
Shoe size: 16
White powder: None found.
Name
Evidence
DanFingerprints: Yes
Mouthprints: Beaver looking
Shoe size: No
White powder: Baking Soda
PegFingerprints: Yes
Mouthprints: Chipped teeth
Shoe size: No
White powder: Salt
JakeFingerprints: Yes
Mouthprints: Front tooth knocked
Shoe size: No
White powder: Cornstarch
LouFingerprints: Yes
Mouthprints: No
Shoe size: No
White powder: Sugar

Findings: ( what did you find. Summarise what you have written in the table above)
What I got first from the table that everyone had a fingerprint and evidence for white powder. But I hadn't got a shoe size from any of the suspects, because they were all barefoot. Dan's mouth was like a beaver. Peg's mouth was chipped. Jake's front tooth was knocked off at a baseball game. There weren't any mouthprints for Lou. 


Verdict: ( who is the burglar and why)

I think that the burglar is Dan the Man because he had a swirl fingerprint and he was the one who was stealing the giant chocolate kisses.


http://www.cyberbee.com/whodunnit/crimescene.html