Balloon Rocket Experiment

Balloon Rocket

Hypothesis (What I think will happen)

I think that it won’t go really far but it will still work.

Materials

• String 10m
• Straw
• Balloon
• 2 chairs
• Sello tape

Method (What we did)

1. Tie or tape string to the chairs
2. Place the straw on the string with it going through
3. Blow up the balloon do not close off the end
4. Pinch together the end then tape the big body part to the straw with the open facing the way that there is no string.
5. What and see what happens.

Observation (What happened)

The balloon went flying because the air was all rushing out of one hole and that caused it to go flying.

Conclusion (Why I think it happened)

Because the air was all rushing out and making the balloon move.

Submarine or Boat

Boat or Submarine  

Scientists: Hannah and Olivia

Question/Goal/ problem

What shape of container will hold the most weight ?

Hypothesis (The shape I have chosen and why I think it is the best shape)

Olivia and I have chosen a pan shape because we think that if it is spread out it will float better and we can fit heaps in it.

Materials

Container filled with water, modelling clay, old coins

Method (What I did)

Create a boat out of modelling clay.

Fill the container with water.

Place the boat carefully onto the water so it floats.

One at a time , put coins carefully into the boat . Count how many coins are in the boat before it sinks.

Observation/ Analyse (What happened and why I think it happened)

Our creation floated and carried seven coins because it was spread out and light. It was also big so it could carry more coins.

Conclusion  (What I discovered about floating/ sinking )

I found out the a piece of paper could float and carry 5 coins because when Mr Ford put the coins in the middle it was pushing the middle down and making the sides float.

Centripetal Force Experiment

Hypothesis: I predict that the water is going to stick to the back of the bucket. I think that when I start to spin faster and faster the bucket will get heavier because the air will be slowing the bucket and I down and that way the bucket will get heavier. 

Variables we must control: Variables Control Liquid, Each bucket filled to the second mark to ensure that they have the same amount of water. Speed, We all need to spin around about the same speed or the water will fall out if you are going to slow. Position, You need to make sure that the bucket is not facing down to the ground. Technique, Everyone needs to start and finish the same. We all need to spin the same way. 

Method:
1. Get a bucket and fill it to the second mark
2. Hold the bucket in front of you with your fingers under the rim of the bucket.
3. Start to spin nice and slow then get faster and faster
4. Watch and see what the water is doing
5. That is called Centripetal Force.

Results: My prediction was right that the water was going to stick to the back of the bucket and I was right that it was going to get heavier and heavier. All the water stayed in the bucket but when you started to slow down the water wanted to keep spinning around so there were spillages at the end. Gravity didn’t work because I thought that when we were slowing down the water was going to fall out but it didn’t. The Centripetal Force pushed the water to the back of the bucket.

Don't fall on my head water!

I am getting dizzy!

It is working!

Does air have weight?

Does air have weight experiment

Equipment:

• Ruler
• Table
• Person to Karate chop
• 2 pieces of News paper

Prediction:

I think that air has no weight because we can’t feel it on us and if you are looking at some scales with nothing but air on it, the scales say it weighs nothing.

What happened:

When Ollie Karate chopped the ruler and it went flying. Mr M scrunched up a piece of newspaper and put it on the end of the ruler which is on the table then Ollie Karate chopped it again. The paper went flying and the ruler went not so far. Next we put the paper on the the ruler flat with no air under it then Ollie karate chopped the ruler and the ruler snapped because of the weight of the air pushing on the paper.

We tried it again and no one could snap it apart from Mr Moriarty. When we had all tried Mr Moriarty decided that he would have a go so we made the paper nice and flat with no air under the paper and the ruler was more than half on the table. Mr Moriarty karate chopped it and the ruler snapped! We were all so excited. "Just a little bit of blood." Mr M said.
I was wrong after all:-(

I still think that the ruler is going to go flying

                             

Science: Air Exists

What is air?

What causes air to move?

Experiment: Air exists

Equiptment

• Container filled with water
• Jar
• Paper towel

Prediction

It think that the paper will stay dry because the air is trapped in the jar with no way to escape.

Observe

When you put the paper towel in the jar and then place the jar in the water upside down and then lift the jar out of the water and the paper towel will still be dry.

Explain

In our groups, we all run down to the water troth and fill our bucket with water then we all run back to the class. We scrunch up the paper towel and put it in the jar and then tip it upside down and place it in the bottom of the bucket then lift it back up. The paper towel stays dry. Why? Because the jar is filled with air and then when you put the paper towel in the jar it is surrounded by air so when you put the jar under the water facing down the air has no way to escape.

Wow, it actually worked!

First Parachute jump science

Equiptment

• Scissors
• Plastic bag
• Straw
• Cello tape

Prediction:

I thought that the parachute was going to fall down and go all messy.

Observe:

First you cut the straw into 8ths till you reach the bendy part. Next you cut the handles and the bottom off the plastic bag then cut the plastic bag into halves and then cut one of the halves into squares. Next you origami fold the square into 16ths then cut the top off the shape that you have made. Open the plastic and you should see a circle. Now you place the cut straw on the plastic and spread them out evenly. Tape them down with cello tape and then tape the end of the straw closed. Now turn the parachute over and let it go up in the air. You have made a Parachute.

1. Who made the first parachute drop and when? Andre-Jacque Garnerin, October 22 1797
2. What Nationality was he? French
3. Did he receive any prizes for completing this amazing feat? No
4. Describe the parachute. The parachute was seven-metre silk parachute
5. Describe how the drop took place. When he landed he was not injured but it was a violent landing.
6. From what height did he fall from? Approximately 3,000 feet.
7. Who was his student and what fame did she reach? First ever female parachutist. His student was his wife.

Here is a link to the site where we made it from.