Bridges 1B

Bridges 1A

Electric Power Plants

2n ESO

Renewable Energy sources

2n ESO

Renewable Energies

2n ESO

Non-renewable energies and the environment

2n ESO

Petroleum and Natural Gas

2n ESO

Nuclear Energy and Coal

2n ESO

Newton’s three laws of motion

Sir Isaac Newton was a physicist and mathematician from the 17th century. He is famous, among other things, for his laws of motion. These laws explain why objects move (or don’t move) as they do.

First law:
Newton's first law, also known as the law of inertia, states that every object in motion or at rest remains in that state unless an unbalanced force is applied to it.
The following video from ESA (European Space Agency) explains very clearly this law:




Second law:
Newton's second law states that the force acting on an object is equal to the mass of that object times its acceleration. As the force acting upon an object is increased, the acceleration of the object is increased.

F=m·a


Watch this second video, also from ESA, to better understand the second law:

Watch this second video, also from ESA, to better understand the second law:



Third law:
This law is also known as the "action-reaction law". It says that all forces in the universe occur in equal but oppositely directed pairs. There are no isolated forces: when one body exerts a force on a second body (action), the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body (reaction).

Our students from the 4th year of ESO have produced this great video that illustrates the third law with an everyday event.

Enjoy it!

Visualizing DNA

In this experience we have been able to see DNA with a naked eye, i.e, without any kind of instrument. Even though, the quantity of DNA it has not been very high, at the end of the experiment we have got a whitish mass, the DNA from the cells of our buccal mucose, obtained simply rising mouth out.

As you can see in the video, we use different everyday products so as to break the membranes and let the exit of DNA from the nucleous of cells.

It is very easy! you can do it even at home!

Elements of periodic table

2n ESO

Atmospheric pressure: experiments

The kinetic theory

3r ESO

Safety rules

Part I

Part II

Part III

Part IV

Part V

Talking about nuclear plants

Tercer ESO

Torricelli's barometric experiment

Watch these videos:

• Go to Museo Galileo to download video and audio

 

•   Listen the audio and read:

  (Text from Museo Galileo)

 Torricelli performed his celebrated experiment on argento vivo [quicksilver, i.e., mercury], in Florence in spring 1644. Torricelli filled a glass tube, open at one end, with mercury. Then, closing off the open end with a finger, he tipped the tube upside down and lowered it into a basin containing more mercury. He observed that the column of mercury descended only partially, stopping at a height of around 76 cm. Torricelli was convinced that the space created by the descent of the mercury in the tube was empty, and that the force holding up the column consisted of the pressure exerted by the air on the mercury in the basin. In a letter to Michelangelo Ricci of June 11, 1644, Torricelli declared that his experiment proved two fundamental concepts: first, that Nature did not abhor the void; second, that the air had weight. The results of the mercury experiment opened a period of revolutionary change, forcing a re-examination of doctrines accepted for centuries.

•  Observe the picture and learn

http://www.old-pz.gse.harvard.edu/ucp/curriculum/pressure/s1_lesson2_lessonplan.htm

• Explain the experiment

 

Periods – What are they? (Menstrual cycle)

This activity is the last part of a project, called “Women, hormones and applications”.

We introduced the topic with a text about the menstrual cycle and some hormones. This task is extended with a video where more hormones are mentioned. We talked about them and answered some questions.

Finally, the students have to elaborate their project, a triptych about one contraceptive method (either hormonal or non-hormonal) in order to show it to the rest of the class, as you can see in this link.

Cell organelles

• Listen the cells songs

Living cells are divided into two types - procaryotic and eucaryotic

Eucaryotic Cell

ANIMAL CELL

PLANT CELL

• Go to Eucaryotic Cell Interactive Animation 
• Look and learn cell organelles
• Watch the following video to know more about cell organelles 

Now, in groups of three, make your own model and show it to your classmates.

Spaguetti tower: a race against the clock

Learning Goals:

• Engineering for structural strength
• Creative problem solving
• Determining variables and controlling them
• Team work
• Time management

 Learning outcomes

• Some shapes and materials are stronger than others.
• Weak materials can be made stronger with good design techniques.
• Distribution of mass is an important consideration when building structures.

How to make a compass

Alumnat de sisè aprèn a fer una bruixóla amb estris casolans, activitat realitzada dintre de l'àrea de medi en anglès.