This is a blog created by Ms Luminati (science teacher), Ms Mathis (English teacher) and Ms Burguière (science teacher) for the students of lycée expérimental André Malraux (Biarritz, France) who are learning science in English. They want to show that science is fun, interesting and easy particularly when it is done in English!
This year we hope to work again with some fine European partners.
Let us all have fun together!
During the week of Sea
Ambassadors Mr. SOULIER become to talking about the evolution of
whales. We learning to the wolf is the whales ancestor and the whales to the species of cetaceans.
representation of a Mesonyx ( The wolf)
representation of aProtocetus ( The whales)
The specieshasleft theterrestrial environmentto return to theaquatic environment.
Finallywe learninghow to study the whalestoday :
-TheMarkingcapture,whichallows among othersto estimatethe populationof the species.
Diving isimportantto recognizea species.The speciescan diveas deep as possibleis the:
Now we estimated that about had ten of thousands of species to survive without protection.Fortunately today with the standards ,it can make with a few thousand species.The hunting of whales is banned today for all species.We hope to keep this diversity for many years , and maybe learn to see how they evolve !
Tuesday afternoon, from 3.30
to 5 p.m. We went there by ourselfs, it is located next to the gare
of biarritz, it is a big blue building.
Surfrider foundation was
created in 1990 by surfers in biarritz
They told us about pollution
of the ocean and the possible risks that could effect us if we keep
on polluing as much as we are right now. They told us that they defend the see by action like cleaning the beatch. They also try to convince the smallest that they are the one who can change the world.
Last week, on Thusday , we went at the sea museum of Biarritz. We had a conference about species we don't have the occasion to see. This museum has a lot of expositions and different species. A seal's aquarium is on the roof and the visitor can see their lunch. We saw an exposition of abyss giants species like big squid or goblin shark. We met a doctor in Bio marine who work in IFREMER have talked about Gascogne Gulf species.
The friday 5th of december we went to the ocean city.
Here we met a woman called Peggy Bergeron, who talked about the byss, the differents species in this, the IMMENSITY of this place, the number species uncovered and there strange particularity and all the risks that they can incur.
After this she let us gone, and visit Ocean city. In this one, there is a lot of differents acitivities and cultural thinks. But when we gone, they were itinerant exposition who talked about the abyss too.
Sunscreens, makeup,shampoo...the skinabsorbs60%!And women have515chemicalsproducts on the skineach day!Moreovermany cosmeticsdamage thecorals andeven the oceanin general. What solutions can exist?
EQcompany has developed naturalproducts such asapricot kerneloil, they don't takebadsubstancesfor humansand the environment. Official website:http://www.eq-love.fr/
We going to give you some tips about cosmetics : For protect your skin and the planet, take productswith the logo"BIO". Use products with a latin namein the ingredients because it's natural. You shouldn't use cosmetics with this ingredients: petrolatom, paraffinum, -one word (dimethicone), -anewords, PEG, PPG, BHT, BHA,paraben.
If an ingredientstarts withCi...., it's a unsafe ingredient but if an ingredientstarts withCi77 ..., it's natural and with any dangers.
A exemple of naturals cosmetics : sunscreens by EQ (EVOA is the name of organic product line)
Last week we met our friends from Greece, it was a cool experience because i've personally never met Grec and they are really smart too.
We ask them some questions about their school, christmas and a lot of other things.
It was interesting because their way of life is not the same as our, like they finished school at 2pm every day and they can eat whenever they want to.
They also told us how they celebrate christmas in Greece and it's the same in France exept that they decorate boats.
For the this project I worked in group with Cédric. The subject was proposed by Mr. Moulat our physics professor and he talked about the differents way to transform sea water into fresh water.
First we filtered the seawater in order to separate sand from water. Then we distillated the water to get water with no mineral salts. At the end we measured the contentration of calcium ions (Ca2+) and magnesium ions (Mg2+) with mineral water (Contrexeville). The name of the experiment is colorimetric dosage
We are 2 partners working on this project: Léa Degos and me.
We have chosen this subject because for me I would like to be a photagrapher and for Léa it's original and she likes this idea to take a photo in a different way!
Taking a photo with a bottle is in the principe of a pinhole.
The operation of this
device is similar, on principle, to that of the eye.
When we look at an
object, it reflects light rays enter the eye through a hole, the
pupil, and reversed image forms on a screen, the retina.
We have made a pinhole camera with a bottle: - we cut the top of the bottle
- we paint in black inside of the bottle
- we put a light sensitive paper inside
-we make a little hole in front of the paper
We try to take a photo of one tree in our hight school and we have to develop our images.This picture is in negative.
To develop a photo we need: -4 baths ( developper bath, stop bath, fixer bath and water bath)
- A safelight lamp
- a dark room
In the futur, we have to transforming our negative picture in positif. We have to explaining to you how we do this!
Our project is about coloring agents in sweets. It consists of analysing the composition of coloring agents in sweets, the dangers and the diseases of coloring agents for human body.
We did experiments to discover what the coloring agent of the Smurf is. For this experiment we needed chemistry equipment (for example beaker, spectrophotometer, colorimeter...).
We made a Smurf solution to compare with other solutions of blue coloring agents in order to know what coloring agent is in the Smurf. When we find the good coloring agent ("blue Patenté V") we searched the concentration of coloring agent in one Smurf. For that, we made a scale of differents tints and we drew a curve of calibration to know the exact concentration.
For this project, our team is Benoit and Jimmy, and our goal is to find the composition and temperature of stars. Our question is: The diferent compositions and temperatures between the sun and Vega. We found an experiment to discover the temperature of the sun with the law of Wien and that was a success because the sun temperature's surface (photoshere), is 6000 K (Kelvin or Degrees is the same because the temperature is too hot to see a difference, Kelvin= 273+°C), and we found 6100 K. We found an other experiment for composition but for the moment it was a failure and not finished. The material necessary is a white light, arc condenser, a lens, a slit, salt in ethanol solution (to burn), a prism and screen.
Here we have a video of the composition of stars. And with the last experiment, which recreates how we made the Newton telescope.
In the second part, we had a school outing with Mr Moulat to use a telescope and to find an other star and compare it with the composition and temperature of the sun. For this we used a Newton telescope.