Protein In Foods Experiment (Science)

In science our new topic is food and digestion. The other day we did an experiment by putting different foods in a beaker and putting copper sulfate and sodium hydroxide. We did this to try and see what food had complex and what food had protein in it and what didn't. The things that we used were Milk, Butter and Egg White.

Aim: To test a sample of food contains protein

Equipment: Test Tube, Sodium Hydroxide (NaOH), Copper Sulfate (CuSO), food sample.

Method: 1. Place about 2 mL of the sample into a test tube and add 5 drops of sodium hydroxide.
              2. Add 5 drops of copper sulfate into the test tube.
              3. Shake the test tube gently from side to side and watch to see if anything happens.

Results: If the solution remains blue then no protein is in that food. But if the solution turns to a purple colour then there is protein in the food.

 

What's In My Meal? (Science)

For the last couple of days in science we have been working with a pair to make a poster about what is in our food. First we had to pick what meal we were going to look at me and my partner choose scrambled eggs. First we had to sort the ingredients into different food groups like Fibre, Carbohydrates and lipids/ dairy products. We then had to right down how to make it.Hope you enjoy.

Social Study's Communism In North Korea

For the last couple of weeks in social study's we have been learning about government. Some things that we have been learning about are Dictators, Communism, democracy and monarchy. I chose to learn about communism in North Korea. Below is a slide show with some information about North Korea I still need to add in a little bit of information. Hope you enjoy.



New Zealand Government
In New Zealand we have a democracy. This democracy lets us have the right to vote at the age of 18 for whatever party we want in. It also lets us speak freely about what we think witch means that we can strike about what we think is right.

Eye Dissection

This week in science we have been learning about how your eye works. For an experiment we got to dissect a cow eye.

Aim: To find out all of the different parts of the eye.

Method: At the start of the experiment we had to cut all of the bits of fat and the muscle that was still on the side of the eye. We then used the mini knife to poke the middle of the cornea(To protect the eye) to get the liquid out (Vitreous Humor) of it so we could do some more stuff. We then used the tweezers and the mini knife to open it up more and try to get the pupil(It lets all the light in) and the lens( Focuses the light) out. After we did that we cut the eye in half so that we could see all of the other peaces in the eye. When we cut the eye in half some of the things we saw were retina(receive light that the lens has focused) and iris(Controls the size of the pupil). Then we cleaned up the mess that we had made. 

Warning Graphic Content!!


Results:

There are some of the photos from our experiment.

What I learnt: I learnt that there is a liquid inside your eye called Vitreous Humor.
Do you know anything else about an eye?

How To Make An Aluminium ID Tag

For the last couple of weeks in metal work we have been making aluminium ID/ name tags. I am going to explain to you how to make an ID/name tag.

At the end of this this is what my looks like hope you like it.

Here are some pictures of some tools that I used when I was making this.

These are the vices that we used to hold the metal in place when we ere cutting it. 

This is the drill that we used to drill the hole so that we could clip it onto things.

This is what we sued to measure how long our peace of metal was.

This is what we used to imprint the letters into our work

We used the ruler so we could measure we used the scribber and the square to make a strait line. 

This is what we did at the start we had to use the scriber and ruler to mark where to cut it.

This is us cutting the metal where we used the scriber to mark out 40mm

We then started to file down to the line that we had made at the 35mm mark.

We then just kept checking how big it was so that we did not go over 35mm.

We then had to drill a hole in the metal so that something could go through it.

Step 1: Create what design you wont to be on you ID tag. Something like your name a pets name or anything as long as it fits onto the peace on aluminium.

Step 2: Take a peace of aluminium and cut it with a hack saw so that is around 38-37 mm long. You then need to put some engineers ink onto one side of the peace of aluminium and mark out where 35 mm is with a scribber on the peace of metal.

Step 3: You then need to start filing down to where you had marked the 35 mm line. And when you start getting close to the line you need to use a vernier caliper to measure how long the peace of aluminium.

Step 4: Once you have taken the metal down to 35 mm if you want to you can make the corners partly round. You then need to get a peace of sand paper and sand your peace of metal and get any marks out of it.

Step 5: Use what letters or numbers you need and use them to make your word on the peace of metal. After you have done that you have to use the buffer wheel but make sure to not put to much polish on your peace of aluminium.

Some things that I found difficult when we were making this are when we were trying to get it down to right size I had to restart because I messed up the first time but the next time I got exactly 35mm. So that I did not mess up again I made sure to keep checking the measurements for the peace of metal and when it got close I started doing little bits at a time.

The main things that I have taken away from this is how to make an ID tag and how to use a lot of tools that I have never used before.

Science Experiment Making And Using Cup Phones

Last week in science we did an experiment using cups and some string. 

Equipment: 2 Styrofoam Cups. Nylon String (Fishing Line) and Nail to poke a hole.

Method: At the start we had to grab two cups and get a buddy. We would then write our name in the bottom of our cup. Then we got a nail and pocked a hole in the bottom of the cup for the string to go through. Once you put the string through the hole you then need to make a knot in it so that it does not go back through the hole. Once you do that one person puts the cup up to their and and the other up to their mouth. You then pull the string until it is tight a speak. The person with it up to there ear should be able to hear the other person and long as the string is tight and the string is not touching anything.

 

Redesigning My ID Tag Metal Work

This was the finished result of my 3D print but when we were trying to get the back off it a bit fully snapped off. Now I am going to redesign it and make it better. Some things I need to do is make a hole a bit longer and I need to make the tag a little bit smaller. I am also might make the name a bit bigger but I will keep the dog paw the same. I am also going to make it so that the words and the paw is an indent instead of poking out of the peace.

As you can see in this photo there is no hole 

In this photo it has the hole but it does not go all the way through. You can also see that when I was trying to get the bottom plate off the back came off as well. That is another reason why I am going to be changing the design around and making it better.

This is what my new design is going to look like. I have made it a bit smaller and the words and paw are not going to be sticking out like the first design was. 

What do you think of my new design?