Y8P Wonderful Experiment

Hello guys today Y8P did a wonderful job in today´s experiment. We had to mix different types of liquids with chalk and the outside of an egg. Some of this liquids when it mix with the chalk and egg it react and make bubbles

Here it is a fun chemical video

The Kinetic Theory and Atraction

Today in class we've talked a lot about forces between particles, states of matter, and other stuff like that.

We started talking about some vanilla candles, Andy had on a chair. Why did the room smelt with vanilla? We all said: The candles! But why? Diffusion is a great thing that happens with all of the things. The diffusion starts were all the particles are more concentrated (solid) and ends were the particles are less concetrated (the air at a corner of the room, for example).

Then we talked about the kinetic theory. You may ask: What's that? Well, it is a very important thing all people should know. The kinetic theory, refers to the "movement" of particles in solids liquids and gases.

In a solid the forces of attraction between particles are very strong, keeping the shape rigid.

These forces are weakened in a liquid, so their structure is not a regular arrangement.This means that liquids can take the shape of any container they are in.

The forces of attraction between particles in gases have been overcome as the particles have more energy. This means that a gas does not have definite shape.

Im new!

Im Nicolas, and I will be showing what we do in new york, caneticut. I will post as soon as I can, assuming that they don't give too much homework there!

Fundamentals of Transfomers

Fundamentals of Transformers

1. High voltage causes shocks
2. High current causes wires to heat up.
3. Power-->Voltage x Current

P=VI

To transfer power efficiently, we need to transform it using-->

STEP-UP

TRANSFORMERS and

Step-Down

These change voltage to an appropiate amount for the use of electricity at that moment.

In power stations and power lines we need to consider point "2."above.

• Heating wastes energy.
• So we use high voltages and low currents. But in our homes we need to consider point "1."
• We don't want to get shocked.
• So we use low voltages and high currents.

In each case, POWER is transfered at the same level.

We get the same power from:

1A at 240V

As we do from:

240V at 1V

Homework reminders

Homework set today was:

7A and 7J - Not really homework because it counts towards your experimental mark at the end of the year so it must be completed. Write up the egg-speriment, complete with observations, explanation, and conclusion. A reminder of what these are all about are in Pablo's post below. This is to be written up to hand in for the lesson next week same time (Tuesday's lesson). NO Web team exemption, everyone must write up experiments in their books.

8P - One element from the periodic table, but NOT the same one as someone else. Make a poster A4 size to form a LARGE periodic table on my ceiling. Check Hugo's post below to make sure that you and other people are not doing the same element. Web team you may do yours on the web but that won't help to decorate my ceiling will it...

8C - P65, Q1-4 for collection on Friday to be marked over the weekend. There goes my chances of having any fun this weekend. Web team exemption if work posted of a similar nature on the web by Friday.

9S - Finish off funky pH scale for next lesson, web team exemption if work posted on the web before friday, including Ana and the photography team.

9P - P65, Q1-4, collection Friday. Web team exemption if similar posted on the web by friday

Y10 - For failing to attain all the objectives in yesterdays lesson you will be set additional homework in tomorrow's lesson

Y11 - Finish up those calculations for tomorrow, where I will try to melt a piece of wire using a slinky spring and a power pack. Calculations important and therefore no web team exemption.

No excuses guys and girls you've been reminded.

Funny web page!

I've found a link were you can find interesting experiments about all types

of things:

http://www.megatrix.es/megatrix/web/html/momentos/ranking_videos.htm?id=396

Here is another page about experiments(sorry, it is in spanish)

http://www.cientec.or.cr/ciencias/experimentos/fisica.html#57

Today we've done an experiment about an egg.

You put alcohol inside a glass bottle and light it, and

then you put an boiled egg on top...

Result:

The egg goes down. It is very funny, but everything has a reason...

Particle models can be so(oooo) FUN!!

Hello ''cleva'' people!!

Well,you may have seen lots of particle models experiment but i recomend you go to this clear video of what happens when you mix some ''mentos'' with ''Coca-Cola''.


You can see this at this page: http://www.youtube.com/watch?v=gXcIsTN14ZQ.


For that people who sometimes forget how they have to do their Experimen Reports,I will show you how:


First, you will have to know what Observation is.

It's not just looking, but listening, smelling and felling.

Next, write this down:

For the Explanation/Theory, you need to put what you think that happend at the experiment and, for example, in PARTICLE MODELS, how can you use this to explain what you saw.

For last, the Conclusion:
Has our aim/title been satisfied??
What did I learn??
What improvements could I make??
And remember that apparattus are 2-D pictures of the things I used.

Well now I'll tell you what we did at class:
We did lots of interesting thing that we all enjoyed:
We started talking about Particle Models and we got some alcohol inside a baker,got a match and made the alcohol burn.
Then we made a really ''Cool'' experiment:
We got an egg, a bottle, a match (or two), a baker and some alcohol.
Then we tried to put the egg into the bottle but it didn't fit,so we got some alcohol into the bottle and the baker.
After that, we got a rolled paper and burned it with some burning alcohol (which we lighted up
with a match (or two))and put it into the bottle with the alcohol to light it up.then we got the egg and put it over the bottle, and because of the presure, it got in!
Well, I hope you enjoyed my FIRST ScienceTeam work.

Bye walking Brains!! :)

Diet Coke and Mentos

Y8P Posters

You can chek in the forum the elements Y8P chose to do for the posters!!! :)

Y7J´S SCIENCE

Today in class we did the particle model of evaporation .It is very simple: liquids don´t need fire or very high temperatures .Water can change form to gas in any temperature ,wind helps the evaporation.
Then we did an experiment ,one kid kindly offered himself to do it . It was like this:he poured some water in his head and in some minutes ,it evaporated .
At last ,we learned the words of a scientist that explained what is an atom and said us much more things : "All the things are made of atoms-Little particles that move arround in perpetual motion ,attracting each other when they are a little distance apart and repelling each other when they are sqeezed together".

Science Y9R

Today in class we've been talking about acids,salts and the pH scale. So, i've decided to show you a page i know for that you can study and that also you play some games about the topic. I hope you enjoy it:

http://www.wpbschoolhouse.btinternet.co.uk/page03/AcidsBasesSalts.htm



Until next time

Science Y7J

Today we have done so much things I really can't remember every single detail.

At first we did again particle models. This time of evaporation. In generaly we did it quite good.

Then we talked about particles and their importance to science. We talked also about what statment in science conatains the most information in the fewest words. Here you have it:

"All things are made of atoms-little particles that move around in perpetual motion, attracting each other when they are a little distance apart, and repelling each other when they are squeezed together."

Diary of... a Year 9 SCIENCE class January 29th 2007

Hi,
this is my first entry so please don't start with critisism.

OK, let's start:
today we started talking about Richard Feynman (if you wanna know more please see phoenix's entry -Andy's-). Then we talked about acids, salts and pH. I find very interesting to talk about these chemical themes. Our first task was to find out the definitions of these three words (acid, salt & pH) and write them down.
Afterwards, we had to draw a pH scale and doing it in some way different than normal ones for Andy said they were quite "boring". But, before finishing the scales, we tested some substances (like alcohol or vinegar) for their acidity or basity (Do you use this word?) with some universal indicator papers.
Finally, our hw was to do questions 1 & 2 of pg. 65. I'm not going to explain how to do them because you only have to repeat what we talked an read in class. Come on! It's too easy.
Well, see you next lesson.

Elements and atoms

Elements
Elements consist of only one kind of atom and cannot be decomposed into simpler substances.Elements consist of only one kind of atom and cannot be decomposed into simpler substances.
Our planet is made up of some 90 elements.Of these 90, only 25 or so are used to build living things.

Atoms
Each element is made up of one kind of atom. We can define an atom as the smallest part of an element that can enter into combination with other elements.

Each atom consists of
a small, dense, positively-charged nucleus surrounded by
much lighter, negatively-charged electrons.The nucleus of the simplest atom, the hydrogen atom (H), consists of
a single positively-charged proton. Because of its single proton, the atom of hydrogen is assigned an atomic number of 1.
a single electron.
The charge of the electron is the same magnitude as that of the proton, so the atom as a whole is electrically neutral. Its proton accounts for almost all the weight of the atom. The nucleus of the atom of the element helium (He) has
two protons (hence helium has an atomic number of 2) and
two neutrons. Neutrons have the same weight as protons but no electrical charge.
The helium atom has two electrons so that, once again, the atom as a whole is neutral.
The structure of each of the other kinds of atoms follows the same plan. From Lithium (At. No. = 3) to uranium (At. No. = 92), the atoms of each element can be listed in order of increasing atomic number. There are no gaps in the list. Each element has a unique atomic number and its atoms have one more proton and one more electron than the atoms of the element that precedes it in the list.

Going somewhere nice this weekend?

Why not book mini-Andy to come with you...

Check out www.theadventuresofminiandy.com for more details...

Y8P science class

Last thursday in science we show Andy what was our last´s topics. We did presentations in groups like Jorge, Santiago and Adrian in one groups and Hugo, Akira, Ricardo and Marco in other group. Andy was very happy with us because we did all the objectives and also it was very funny

Forum

Not on the web team but want to contribute to the discussion about science?

Use the forum, which is located at http://physics7.proboards77.com/ where you can post about your subject, about other subjects and about science and life in general.

Same rules apply as on this site and on the google group.

No photos of faces or personal details etc etc

Richard Feynman - The Ultimate Physicist

One of the leading Scientists of the last century was an American called Richard Feynman.

As with most great physicists, like Einstein and Newton, Feynman was a real character. There are some classic photos of him playing the bongos and legend has it that one day, just wanting to get away from it all, he put a pin in a map of the world and just took off to wherever it landed.

He apparently ended up living in some remote Russian village where he studied science in a little hut surrounded by local people who's language he didn't know.

He was a great guy and really down to Earth, and more miraculously he pretty much taught himself physics. It is because he taught himself he says, that was such a good communicator of the subject and his books and lectures were fantastic and very easy to understand.

Because he taught himself, he was able to come up with a lot of ideas that other people were not able to see who had been taught in school.

And so many of his inventions were groundbreaking and completely unique, such as the Feynman diagrams which show particles travelling in space and time. From these diagrams we can see that time travel is possible, a thing that we couldn't really visualise without them.

At the start of one his lectures, the Great Man says the following quote, which is relevant to all of my classes but at the moment is especially relevant to year 7, who are studying the particle model,

If, in some cataclysm, all of scientific knowledge were to be destroyed, and only one sentence passed on to the next generation of creatures, what statement would contain the most information in the fewest words? I believe it is the atomic hypothesis that

All things are made of atoms-little particles that that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another.

In that one sentence, you will see, there is an enormous amount of information about the world, if just a little imagination and thinking are applied.

You can hear the man himself speak on this website and if you have time why not look up some of the things he said and post them on the group so that everyone can learn a bit more about the life and work of Richard Feynman

Science in Y7J: Collapsing Cans

Hi,
As usally the class has been a bit crazy but we manage to learn something.
At first we did particle demostrations (showing how water boils and freezes).
Then we looked at a fancy experiment. We boiled water inside a Fanta can and
we hold it under cold water.
RESULT:
The can squashed itself (it can sound a bit strange, but its true).
CONCLUSION:
Few steam particles were left inside the Fanta can, and outside it, there was a large number of them, so when you collapse the can's hole, the outside particles pushed the Fanta can until it
squashed.

Science in Y8P

Hi,
Between yesterday and today all the class made its presentation about the topics we did in the first term with Michel. As usual Marco and Ricardo were playing with the rulers, as if they were swords!!! (and did not pay atention) jeje :)

¡¡¡Remember to visit the external links!!!

Brilliant birthday! Thanks!

It's these little things that make teachers lives worthwhile



Thanks to all my pupils for the presents



This was the best thing you lot could have done for me! The house is excellent! And the model of me was SO detailed - I mean even the little metal badge. It's amazing!



And I would have had somewhere to live too if I ha't found a house



I walked home tonight smiling proudly and all the lovely ladies in Madrid knew that I was proud teacher (or may have assumed I was a father which is NOT a good thing for a single guy) Makes you wonder why anyone would want to do any other job...