Revolution Tour

On Tuesday we had a special visit from the revolution tour. Our classes filed into the auditorium where we meet Reggie Dabs at the door. He welcomed us in, in a friendly manner then we took our seats. He started the show off by playing some music on a saxophone which we joined in on. After that, we had a special performance from the revolution dancers. After the amazing performance, Reggie introduced us into a game called "throw your friend under the bus," In the game, there was Five contestants The funny person, the smart person, the athletic person, the shy person, and the teacher. So the audience had to point to whoever they thought the five topics fitted best. The person with most people pointing to them would have to go up the front and answer true or false questions about bullying. Not long after he started to talk a little bit about his life. And that was where it ended. His main message throughout the show was to stop bullying.

White Powders

Today you will be a Forensic Chemist. 

A bag of white powder has been confiscated by airport customs.  You need to find out what white powder it is?

Aim: To learn about the makeup of different white powders.



There are a number of different white powders in our everyday life. Some of these are harmful and others are not. Test the four white powders listed to see which one has been found at the airport.

You will be given a small amount of 4 white powders on your cardboard. On the black cardboard using a magnifying glass look at the powders.

Look at them under your magnifying glass and record what you see. 

These are the four powders we will be using. Upload a photo of each powder. 

1.  Cornflour
2.  Baking Soda
3.  Salt
4.  Sugar 

Before you add the iodine, vinegar or water you will need to divide each powder into 3.

Materials

1. Magnifying glass 
2. Sugar 
3. Salt 
4. Baking Soda                         
5. Cornflour 
6. Cardboard  
7. Iodine 
8. Vinegar 
9. Water

Steps

1. Fold card into four squares.
2. Put four different powders on each of the squares. 
3. In each square put the powder into three piles. 
4. Pour the liquids into one of the three piles in each square. 
5. Use the Magnifying glass to see how each of the powders react. 
6. Record the reactions.

Findings:

Words to use: Absorbed, spread, frothed, fizzed, melted, blob,

	Sugar	Salt	Baking Soda	Cornflour
Appearance (White)	white	white	white	White
Grains (small, medium large)	large	medium	small	small
Smell (Strong, none)	none	none	strong	none
Iodine	absorbed	absorbed/dried	absorbed/paste	rolled off/hardened
Water	absorbed	absorbed/dried	absorbed	absorber/hardened
Vinegar	absorbed	absorbed/dried	froth/ fizzed	absorbed/hardened

Conclusion:
When we added the Liquids to the Sugar It would always absorb it and stayed wet.
When we added the liquids to the salt it, again absorbed it then it dried out.
When we added the liquids to the Baking soda they all ended up with a different result when we added the iodine it absorbed it then the texture turned into a paste. When I added the water It just absorbed it and the stayed wet. When I added the vinegar It started off by fizzing then it stayed bubbly. When we added the liquids to the cornflour they all ended up the same except when I added iodine it rolled off and then hardened, and with the others, it absorbed it then hardened. 

Science

THE FEET CAN MEASURE THE HEIGHT

The bones of the feet can tell a lot about a person. What do feet reveal about a person's height? Forensic anthropologists team up with law enforcers to help solve crimes.

Bones of the feet can reveal an interesting fact about an individual. Let's combine math with forensics to see how.

Aim:  To use forensic science techniques to measure the height of a criminal.

Material:

1. A meter ruler  
2. Yourself 

Steps:

1. Get a meter ruler.
2. Measure your hight.
3. Measure your foot.  
4.  Put into a calculator your foot length.  
5.  divide your foot length by your hight.
6. times the answer by 100. 
7. The percentage that you get is the percentage of your foot to your hight 

Findings:

Name	Foot  (cm)	Height (cm)
Lucy	158cm	27cm
Jasmine	156cm	25cm
Heaven	167cm	27cm

15 is the number used by investigators to determine a persons height based on their feet. This is because 15% of a persons height is the length of their foot.

Find out what percentage of your height is your feet. To do this you need to:
Divide the length of each person's foot by his/her height then multiply it by 100. 

15 is the number used by investigators to determine a persons height based on their feet. This is because 15% of a persons height is the length of their foot.

THE BAREFOOT BURGLAR!

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


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. Besides 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 spilled 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.

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 beavers 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 neighborhood. His neighbors report that Dan loves the military. He was very regimented about playing taps on his bugle every day at sunset until an irate neighbor 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.

Jake the Jock

                                                                         Height 201 cm

                                                     Alias: Armchair Quarterback

                                                                                         

Jake the Jock is known for quoting statistics on every sport from boomerang throwing to sled dogging. His neighbors report that he is the neighborhood 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.

• 
  

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 a 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 color brown. It did not have a smell.

Name: Dave

                        

Fingerprints: No.

Mouth prints: Has a chipped tooth.
Shoe size: 16
White powder: None found.

Name	Evidence
Dan	Fingerprints: Whorl Mouthprints: Beavers' teeth Shoe size: White powder: Baking Soda
Peg	Fingerprints: Loop Mouthprints: Chipped Teeth Shoe size: White powder: Salt
Jake	Fingerprints: Whorl Mouthprints: One front tooth missing Shoe size: White powder: Cornstarch
Lou	Fingerprints: Arch Mouthprints: Shoe size: White powder: Sugar

Findings: 

I found that Lou had sugar with her and that her fingerprint was an arch.

I found that Jake had Cornstarch with him and he had one front tooth missing, and his fingerprint was a whorl. 

I found that Peg always had salt and she had chipped teeth as well as a loop fingerprint.

I found that Dan had baking soda on him and he hs beaver teeth and he has a whorl fingerprint.

Verdict: I think that it was dan because He had the same fingerprint and he also had the same teeth marks. He also was trying to get money. The last thing was that he had the baking soda which is what was at the crime scene. 

Finger Prints!

Forensic Science

Definition:

Forensic science is the application of science to criminal and civil laws, mainly—on the criminal side—during criminal investigation, as governed by the legal standards of admissible evidence and criminal procedure.

5 Forensic Science topics;

1. FingerPrints 
2. D.N.A
3. White powder 
4. Ballistics 
5. Files 

    

Fingerprints

Fingerprint characteristics

Aim: To look at the different types of fingerprints.

Materials: 

1.   Balloon 
2.   Finger 
3.   Ink 

Steps

1.   Put your Thumb into the ink. 
2.   Press your thumb onto the balloon. 
3.   Blow up the balloon.
4.    Find out which type of fingerprint you have. 
5.   Do the same thing again with your index finger.

Insert two pictures here of your fingerprints

Ink prints

Thumbprint	Index fingerprint

Record the types of fingerprints from those in your group.

Name	Fingerprint 1 (Thumb)	Fingerprint 2 (index finger)
Lucy	Loop	Loop
Belle	Arch	Arch