Forensic Science

Forensic Science

Definition:

Forensic Science is a form of science that people use in crime scenes when trying to find criminals. 

5 Forensic Science topics;

1. White powder 
2.  Ballistics
3.  D.N.A
4. Fingerprint
5. Forgery

    

Fingerprints

Fingerprint characteristics

Aim: To look at the different types of fingerprints.

Materials: 

1.   Finger
2.   Ink
3.   Balloon

Steps

1.   Get your items and your friend.
2.   Carefully roll your thumb in the ink.
3.   Place your thumb on your balloon without moving it, carefully lift your thumb off the balloon being careful not to smudge your fingerprint.
4.   Blow your balloon up and look at your print.
5.   Repeat the steps with your index finger.

Insert pictures here of your fingerprints

Ink prints

Thumbprint	Index fingerprint
Loop	Loop

Record the types of fingerprints from those in your group.

Name	Fingerprint 1 (Thumb)	Fingerprint 2 (index finger)
Heaven	Loop	Loop
Emily	Arch	Arch

Science Filter Experiment

Aim: To make a filtration plant using household materials.

Water Filtration Plant

What is filtration?

Filtration is separating solids from liquids by adding a medium through which only the liquid can pass. 

Examples are:

1.  Oil Filter 
2. Air Filter 
3.  Pool Filter
4. 
   

Materials

1.Funnel

2.Container

3.Filter paper

4.Dirty water

5.Pebbles

6.Fine Sand

7.Cup

8.Scissors (if using a bottle for funnel and container)

Process - ( use verbs or doing words in each step )

Step 1

Cut the bottle in half and using the top as your funnel.

Step 2

Put the top half upside down in the bottom of your bottle.

STEP 3

Add layers of filter paper, sand, and rocks to your funnel. Making sure to put the sand in the filter paper that is in a cone shape.

STEP 4

Get 1 cup of dirty water.

STEP 5

Pour the dirty water into the filter you made.

Findings

Minutes                          1. 52 drops in a minute.  43 minutes to fully drip through
Drops per minute:
Water colour:
Conclusion:

For our filter, it ended up not working because while we were filtering we accidentally knocked the filter over causing some of the water and pebbles to fall out. We also think it failed because we put the water in to fast causing it to fall through the sides and not go through the whole filter. After a failed attempt we got to add another piece of filter paper on top of the pebbles in a cone shape and retry. The first time the water almost didn't change, but the second time the water turned out almost like tap water with a little tint of yellow. With the second filration test the water dripped through alot slower than the first causing it to come out cleaner.

Balloon experiment

Aim: To see which chemical 
mix creates the most gas.

Hypothesis: (What do I think will happen)
I think that the baking soda and vinegar will create the most gas to fill the balloon and make it bigger than the other balloons. I think that because all of the experiments I have done with mixing these two ingredients has related in making a lot of gas.

Materials:

1.  Bottles
2.  Balloons
3.  Baking soda
4.  Soda water
5.  Salt
6.  1/2 cup measuring cup 
7. Yeast
8. Sugar
9. Funnel

Steps:

1. Grab your bottle, make sure it is empty and dry. 
2.  Grab you funnel and balloon.
3.  Get the first ingredients yeast and sugar.
4.  Pour 2 tsp of the yeast and 1 tsp of sugar, make sure to pour it in one at a time.
5. Then wait for it to rise. 
6.  For the next experiments do the same thing except with the salt and baking soda for the other 2 ingredients go into the balloon.  

Findings:

	Balloon 1 ( 3 tsp baking soda, ½ cup vinegar)	Balloon 2 ( 3 tsp salt, ½ cup soda)	Balloon 3 ( 2 tsp yeast, 1 tsp sugar )
Balloon Size (cm)	12.5cm	5.2cm	4.5cm
Bubbles	Small amount of bubbles.	Medium amount of bubbles	Large amount of bubbles.

Conclusion:

For science this week we did a science experiment were we had to see what chemical mix make the most gas to fill the balloon the most. Balloon one was baking soda and vinegar, the balloon rose fast and got pretty big but didn't get much bigger after. Balloon two was salt and soda water, this balloon rose pretty slow and didn't get very big. Balloon three was yeast and sugar, this balloon had to be started first as it took awhile to rise and made the smallest balloon. I  think if the yeast balloon had been given more time to work it might have been bigger that balloon two but a little smaller than balloon one.

Science

Aim: Our aim was to learn about 10 household chemicals and identify if they are solid, liquid, or gas.

Materials: what the 10 common names are

Steps:

Name	Chemical	Image	Solid/Liquid/Gas
Lemon Juice	Citric Acid		Liquid
Salt	Sodium Chloride		Solid
Sugar	Sucrose		Solid
Vinegar	Acetic Acid		Liquid
Lemonade Bubbles	Carbon Dioxide		Gas
Onion Gas	Propanethiol S-oxide		Gas
Baking Soda	Sodium Hydrogen carbonate		Solid
Milk	Aqueous		Liquid
Cornflour	Endosperm		Solid
Banana	Isoamyl Acetate		Solid

Conclusion: 

Today 7/8Ts and 7/8Mt had science for hurumanu. We learnt chemical names for 10 household items, They are lemon juice, salt, sugar, vinegar, lemon bubbles, onion gas, baking soda, milk, cornflour and a banana. We had to write their common name, their chemical name, whether they are a solid, a gas, or a liquid.

The common name is lemon juice, its chemical name is citric acid, and it is a liquid.

The common name is salt, its chemical name is sodium chloride, and it is a solid.

The common name is sugar, its chemical name is sucrose, and it is a solid.

The common name is vinegar, its chemical name is acetic acid, and it is a liquid

The common name is lemonade bubbles, its chemical name is carbon dioxide, and it is a gas.
The common name is onion gas, its chemical name is propanethiol s-oxide, and it is a gas.
The common name is baking soda, its chemical name is sodium hydrogen carbonate, and it is a solid.

The common name is milk, its chemical name is aqueous, and it is a liquid.

The common name is cornflour, its chemical name is endosperm, and it is a solid.

The common name is banana, its chemical name is isoamyl acetate, and it is a solid.

Storyboard Creation

Today for art hurumanu we had to draw the storyboard. We had to write about the sketch we drew for the storyboard about manaakitanga. We had to swap storyboards with another group and give them a positive, helpful, and thoughtful comment about there storyboard.

Peer assessment given to us:

I like the wolf in the story, it reminds me of a cold night. Next time tell us about what happened after the wolf chased them into the cave.