Team # ________________ _____________ pts.

1

Science Olympiad

Virginia Regional Tournament

Crime Busters

Division B

Team Number: _________________ Student Names: _______________________________________ _______________________________________ School Name: _______________________________________

Do Not Open The Test Until You Are Told To Do So

You may disassemble the test pages, but they must be stapled back together before time is called and you must mark your team number on every page

Have Fun :)

Total Number of Points on this Test: 222 Tie Breakers (in this order): Analysis Section; Qualitative Analysis; Polymer Testing

Team # ________________ _____________ pts.

2

A New kind of adventure

In the Candy Kingdom in the Land of Ooo, a party was being held in celebration of National Fork Day. Princess Bubblegum had invited all inhabitants of Candy Kingdom to join her in this joyous celebration of the almighty fork. Several VIP’s were allowed to join Princess Bubblegum in the inner chambers of her castle in her exclusive party where her precious golden fork was on display for all to see. Among these special people were Finn the Human, Jake the Dog, Marceline the Vampire Queen, and Lady Rainicorn. Each guest brought a nice dish to present to Princess Bubblegum so that they would feast with great delight during the celebration. The Ice King was also in attendance despite not being invited, however, since it was a day of celebration and he brought

food, they allowed him to stay. Much fun was had and games were played. In an intense dance competition sometime in the afternoon, someone even punched a hole in the wall! It was 3:34 P.M. when they all sat down to eat the wonderful food that had been brought. The feast included tortillas, sugar-free cake, gelatin, salt and vinegar chips, and sugar cookies. Princess Bubblegum, who had gone to retrieve her fork to feast, had realized her precious fork was gone! A note was left with only the words “Bwa haha ha!” (how cruel!). The Candy Police were immediately called upon to solve this heinous crime. But, since they are really all just a bunch of sprinkle-covered, sugary nincompoops, we need your help to solve the crime of who stole Princess Bubblegum’s precious fork!

Team # ________________ _____________ pts.

3

suspects

Lady Rainicorn: Lady Rainicorn is Jake’s girlfriend and Princess Bubblegum’s pet and companion. She is a magical creature able to fly by “dancing” on light. She attended the party wearing a stylish polyester scarf. Although docile and kind, there are rumors that her mumbling in Korean could be her discontent in not having enough time to spend with her beloved Jake.

Jake the Dog: Jake is Finn’s best friend and adoptive brother. He is a shape-shifting dog with a passion for the viola, which he shares with his beloved girlfriend, Lady Rainicorn. He loves to make lemonade with Finn’s magically good lemons. Lately, he hasn’t been spending as much time as he wants to with Lady Rainicorn, who has been kept busy by Princess Bubblegum.

The Ice King: The white-haired Ice King is a lonely and misunderstood king known for frequently stealing princesses throughout Ooo to forcefully marry them (Princess Bubblegum being his usual target). He came to the party wearing a rayon robe and a magical magnesium crown from which his ice-based magic abilities come from.

Finn the Human: Finn is an adventurous little human with a penchant for gardening. However, he has been having trouble with his garden lately and has had to add peat to balance out the highly alkaline soil in order to properly grow his lemons. With his luscious blonde hair and hand-knitted wool socks, hethought he’d be sure to get Princess Bubblegum, but she has been rejecting his advances.

Marceline the Vampire Queen: Marceline is the rock-hard, half-demon Vampire Queen of the dark. Sporting long black hair, she is usually shown playing her axe bass and came to the party wearing a leather shirt with iron buttons. Although generally amiable, Marceline has lately become a little fed up with Princess Bubblegum’s prim and proper attitude.

Team # ________________ _____________ pts.

4

Samples

Sample Type of Sample Origin of Sample

A Powder Finn the Human

B Powder Finn The Human

C Powder Jake the Dog

D Powder The Ice King

E Powder Lady Rainicorn

F Powder Marceline

G Powder Marceline

H Powder Marceline

I Metal Jake the Dog

J Metal Lady Rainicorn

K Liquid Finn the Human

L Liquid The Ice King

M Mixture The Ice King

N Mixture Lady Rainicorn

O Hair Scene of the Crime

P Hair Scene of the Crime

Q Fiber Scene of the Crime

R Fiber Lady Rainicorn

S Plastic Finn the Human

T Plastic Jake the Dog

U Plastic Scene of the Crime

Team # ________________ _____________ pts.

5

Answers

Once you identify all of the samples, write down what you think each of them is in the “ID?” column. (8 points for each ID A-N; 3 points for each ID O-U)

Sample ID?

A

B

C

D

E

F

G

H

I

J

K

Team # ________________ _____________ pts.

6

L

M

N

O

P

Q

R

S

T

U

Team # ________________ _____________ pts.

7

Thumbprint Evidence

12 pts. After the crime scene was carefully investigated, it was found that there were two distinct fingerprints on a pen left next to the note. The police promptly asked for thumbprints of all involved. Please complete the following tasks: • Identify each of the fingerprints as either a whorl, loop, or arch (1 point each) • Identify whose fingerprints were found at the scene of the crime (2 points each)

Identity Print Shape

Princess Bubblegum

Lady Rainicorn

Team # ________________ _____________ pts.

8

Jake the Dog

The Ice King

Finn the Human

Marceline

Team # ________________ _____________ pts.

9

_____________________

(#1 Found on Pen from Scene of the Crime)

_____________________

(#2 Found on Pen from Scene of the Crime)

The two fingerprints above belong to which two characters?

Team # ________________ _____________ pts.

10

Chromatography

11 pts. A chromatography paper has been developed from the pen that was found at the

the crime. You may examine it at the chromatography station. You will be given a chromatography paper with a dot of ink from the note found at the scene of the crime. Once you develop your chromatography paper, tape it in the box below (once dry) and answer the accompanying questions.

1) Was the ink from the note written with the pen found at the scene of the crime? How can you tell? (1 pt) 2) In the context of chromatography, the Rf value can stand for retardation factor and …? (1 pt) 3) In this situation, we used paper chromatography. What is another type of chromatography? Name one example. (1 pt)

Team # ________________ _____________ pts.

11

Soils

10 pts. At the scene of the crime, a small patch of soil was found. Test the soil to determine its pH and answer the supplementary questions. 1) What is the approximate pH of the soil? (4 pts) 2) In the context of soils, what is humus? (2 pts) 3) Generally, what colors are associated with humus? (2 pts) 4) Soil containing silica is generally what color? (2 pts)

Team # ________________ _____________ pts.

12

Final Analysis

56 pts. Answer all of the following questions to the best of your ability using the evidence that

you uncovered above. Make sure to answer each question clearly and concisely and back up each claim with appropriate references and evidence. Feel free to use the back of the page if you need more space.

1) Who brought each food item to the party? (21 pts) 2) Who punched the wall? (7 pts) 3) Who do you think committed the crime? (28 pts)