Modeling Mantle Convection Currents

In science class we have been working on a small lab called Modeling Mantle Convection Currents. We did this lab in pairs or groups. I worked with two boys. Luka and Alfie. It took us a few times to get it right. The steps are:
1. Fill a large bottle 2/3ds ( the bottle has to be cut in half)
2. Put in a cup with hot water. the watter has to have food coloring in it. Use foil to cover the top and use a rubber band to make it stay.
3. Put some little pieces of paper in a form of a circle
4. Make 2 wholes with a pencil in the foil
You wil see what happens...
You should have gotten the pieces of paper coming together or separating to the side.

Growing Cristal Garden

Day 1: The places where I placed the crystals became very hard. It is still possible to move around but hardly. I placed some more solution and I will see what happens tommorow.

Day 2: Some of the places where the crystals are growing got softer then before!!! I added more solution to the walls of the garden and at the bottom crystals started growing. I put red, blue and green to the walls. It looks very cool, but a little bit like a painting.

Day 3: Nothing new happened over the weekend. I think that  it stoped growing since I added more solution on Day 1.

Last day (after 2 weeks): This is my last edit on this post and nothing changed in my expiriment! If I added solution to it every day I would probably got crystals, unfortunently I didn't so they did not grow!

Lab Reports

I think my lab reports are same like the last quarter.I tried harder the second quarter and I will try even harder this time!

Trees

The trees give us air. If we cut off all our trees we will all die! That is because without air we will not be able to breathe so that is the biggest reason we shouldn’t cut down the trees! People mostly cut down trees in Brazil where they cut more than 3,000,000 trees per year. In Indonesia they cut down almost 2,000,000 trees per year. There are many countries that have big forests which burn from a fire that forms a very hot day.

How to save trees???

You can save the trees by not wasting paper.

Not cut down trees

Recycling

Planting trees

Newest Element!

NASA will announce later Thursday an explosive finding in the search for new life forms on Earth and beyond, a discovery that shifts what scientists consider necessary for life to exist. While details of the study are under embargo until 2:00 pm (1900 GMT), media leaks have already established that the findings relate to a bacteria that survives and grows on arsenic, uncovered deep in a California lake. Until now, biologists have said life requires six elements, known by the acronym CHNOPS: carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur. Those elements must take shape within three components of an organism: DNA, protein and fats.Every life form has DNA. It is the identifier that, for example, allows humans to reproduce other humans while mice give birth to mice.In other words, DNA is a molecule (called deoxyribonucleic acid) that gives life its biological instructions. All known life needs phosphorus, which serves as the backbone for these nucleic acids that make up life's genetic material.

Temperature vs Dispprsion

H2O's (water) boiling point is 100c and its freezing point is 0c. In fact one of the characteristic properties of H2O are boiling and freezing point. When H2O evaporates it turns into water vapor. Water vapor is a type of gas. When you freeze water it turns into ice. Ice is a type of solid. If you put ice on its melting point you will get H2O once again.

Meteor that fell in Serbia

One week ago there was a meteor that crashed in Serbia! It was a big news in all the medias. A meteor is a natural object created in space. Meteors can be big or small. The meteor that appears in the sky, broke down into many little pieces, that eventualy became dust. It happened exactly next to a city called Prokuplje in centeral Serbia. When the meteor crashed it broke into many little pieces so if you are looking for a piece it will look like a small rock, but people can not see the difference between a regular one and the meteor's leftovers! When it was in space it was in liquid form and when it was landing it changed into solid form. Astronomers study meteors and they say that the from the moment the meteor comes in the earth's atmosphere, to the moment it burns, only a few seconds pass, so people can't see it at all. The fact that the meteor fell on Earth does not make any bad effects on people.