
back	AROUND AND ABOUT THE PLACE It's Physics Jim, but not as we know it! Every year the year eleven physics class design and mount a display (with varying degrees of success) to illustrate a point from their course. This year it was the turn of Newton's Third Law to receive the treatment. The chosen mode of delivery for our merry band was the bottle rocket. Also .. it is a great opportunity to blow stuff up.
I think that the presentation went well, the rocket worked first go and there weren't any problems there (Timmy may think differently) although we did have a backup rocket just in case. There was actually a fair bit of talking and pointing at things done although our audience didn't seem to be overly fussed what happened as long as the rocket was fired off. We had been experimenting with different angles and solutions to use but in the end we ended up using about a 45^o angle and the lowest amount of solute we had ever tried, about 3 teaspoons of bi-carb and 3 of citric acid with an even amount of water. The launching mechanism underwent the most changes throughout the planning stages but in the end we ended up just using the 'cork and cap' technique, it fired without fail with a fair amount of distance and height. All in all, I think it went well. It was quite fun and entertaining to be apart of this fantastic and exciting group of intelligent people. It was fun detonating the rocket, but I think I might need some more facial protection. And it would have been better if we gave the audience an opportunity to ask question and such. But alas, as always, we rushed it and forgot. Apart from that, a splendid job extremely well done. A good team effort. -Timothy Hyatt Oh yeah Ben has asked me to mention that he was an integral part of the performance.	Year 11 Physics presentation Justin The presentation went very well. The script was funny and informative, and as an added bonus the carb-soda rocket actually worked quite well. I think we conveyed our knowledge of rockets and Newton's Third Law in the simplest way possible. The only area we could of imroved on was communication between the primary students and ourselves, as this might of furthered their understanding of our presentation. The Script Intro Today ladies and gentlemen, you are about to witness what man has dreamed of for centuries, the rocket! Concepts But how does such a rocket work I hear you ask. Well, you might suppose that magical powers thrusterise the rocket from the earth. Certainly, that could be the case, but no. To decipher the explanation, we will illustrate "Action and Reaction." This is a principle where when a force is applied to an object (such as punching a wall), the object applies an equal, meaning the same, force to the acting object (so the wall actually punches your hand). Another example of "action and reaction" is a common bouncy-ball. Perhaps the first thing that we should delve into is why it is called a "bouncy ball". This is perhaps derived from the latin words "bouncus" and "ballon". Quite obviously, bouncus means 'to bounce,' and 'ballon' means a spherical object usually used either to bounce or to play many a fine sport. When such an object as a bouncus ballon is thrown against a wall, say, it applies a force to the wall, which in turn makes the wall apply an equal force, but in the opposite direction, to the incoming, and attacking ball. Therefore the ball makes an effort to bounce in the opposite direction. The Rocket Now we unveil to you the sheer power of a rocket at maximum power. As you may have noticed, we have not yet explained exactly how a rocket of this sort works. Now in the previous examples, we have mention an object hitting another object. In a rocket, the objects are either gas or liquid, and the air which quite usually surrounds us. So, when this rocket is set off, the liquid and gas emerges violently from its rear end, and as it pushes on the air, the air pushes on the rocket and therefore it is propelled in an upward motion. Now it is time to detonate the rocket that you have waiting for. Behold! (remove white sheet) Mr Globosk, please arm the rocket. Begin countdown - 10, 9, 8, 7, oh yes I should remind you to apply your safety glasses and raincoat, and please everyone stand back. Now 6,5 4, 3, 2, 1, 0 , -1 oh oops detonate the rocket, er yes. (detonate rocket) Kaboomie

AROUND AND ABOUT THE PLACE

It's Physics Jim, but not as we know it!

Every year the year eleven physics class design and mount a display (with varying degrees of success) to illustrate a point from their course. This year it was the turn of Newton's Third Law to receive the treatment. The chosen mode of delivery for our merry band was the bottle rocket. Also .. it is a great opportunity to blow stuff up.

I think that the presentation went well, the rocket worked first go and there weren't any problems there (Timmy may think differently) although we did have a backup rocket just in case. There was actually a fair bit of talking and pointing at things done although our audience didn't seem to be overly fussed what happened as long as the rocket was fired off.

We had been experimenting with different angles and solutions to use but in the end we ended up using about a 45^o angle and the lowest amount of solute we had ever tried, about 3 teaspoons of bi-carb and 3 of citric acid with an even amount of water.

The launching mechanism underwent the most changes throughout the planning stages but in the end we ended up just using the 'cork and cap' technique, it fired without fail with a fair amount of distance and height.

All in all, I think it went well. It was quite fun and entertaining to be apart of this fantastic and exciting group of intelligent people. It was fun detonating the rocket, but I think I might need some more facial protection. And it would have been better if we gave the audience an opportunity to ask question and such. But alas, as always, we rushed it and forgot. Apart from that, a splendid job extremely well done. A good team effort.

-Timothy Hyatt

Oh yeah Ben has asked me to mention that he was an integral part of the performance.

Year 11 Physics presentation

Justin

The presentation went very well. The script was funny and informative, and as an added bonus the carb-soda rocket actually worked quite well. I think we conveyed our knowledge of rockets and Newton's Third Law in the simplest way possible.

The only area we could of imroved on was communication between the primary students and ourselves, as this might of furthered their understanding of our presentation.

The Script

Intro

Today ladies and gentlemen, you are about to witness what man has dreamed of for centuries, the rocket!

Concepts

But how does such a rocket work I hear you ask. Well, you might suppose that magical powers thrusterise the rocket from the earth. Certainly, that could be the case, but no. To decipher the explanation, we will illustrate "Action and Reaction." This is a principle where when a force is applied to an object (such as punching a wall), the object applies an equal, meaning the same, force to the acting object (so the wall actually punches your hand).

Another example of "action and reaction" is a common bouncy-ball. Perhaps the first thing that we should delve into is why it is called a "bouncy ball". This is perhaps derived from the latin words "bouncus" and "ballon". Quite obviously, bouncus means 'to bounce,' and 'ballon' means a spherical object usually used either to bounce or to play many a fine sport. When such an object as a bouncus ballon is thrown against a wall, say, it applies a force to the wall, which in turn makes the wall apply an equal force, but in the opposite direction, to the incoming, and attacking ball. Therefore the ball makes an effort to bounce in the opposite direction.

The Rocket

Now we unveil to you the sheer power of a rocket at maximum power. As you may have noticed, we have not yet explained exactly how a rocket of this sort works. Now in the previous examples, we have mention an object hitting another object. In a rocket, the objects are either gas or liquid, and the air which quite usually surrounds us. So, when this rocket is set off, the liquid and gas emerges violently from its rear end, and as it pushes on the air, the air pushes on the rocket and therefore it is propelled in an upward motion.

Now it is time to detonate the rocket that you have waiting for. Behold! (remove white sheet)

Mr Globosk, please arm the rocket.

Begin countdown - 10, 9, 8, 7, oh yes I should remind you to apply your safety glasses and raincoat, and please everyone stand back. Now 6,5 4, 3, 2, 1, 0 , -1 oh oops detonate the rocket, er yes.

(detonate rocket)

Kaboomie