Crystal growing

After 2 week observation:

Hello now is the end of our crystal making project, here is how it ended. After observation my crystal garden, I have realized something very important. The solution that put over the sand grew very well, and the solution that I put over the sponge and cotton did not grow well, it just hardens. This happened because on the sand, the crystals grew on it and in it, but on the cotton and sponge, they grew just inside it and harden on the outside. The crystals that were on the sand were salt solution, on the sponge it was sugar solution, and on the cotton it was borax solution.

I also realized that even if I put the same solution on the sand and the sponge on the tree, on the sand grew better. This is because on the tree, the crystals grew inside of the sponges, and on the sand, the crystals grew on it as I said before.

The crystals that grew the least on were on the little tree, actually they did not grow at all which is weird, but I probably did not put enough solution. And it grew the best on the sand. It was the easiest to grow crystals on the salt solution, and the sugar solution. And it was very difficult to grow crystals on Borax solution. The best was of growing crystals is to put a lot of solution, and to put the solution in sited the object too if it is possible.

Making this crystal garden, I have realized that crystals need a lot of solution to grow because if you don’t have any, they won’t grow. Also I will never make crystals again on sponges and cotton because the crystals would just grow inside of it and you would not be able to see them. The best way to grow a crystal is to just put a poodle of solution in a cup, and leave it there, it would definitely work. Like a friend from my class did it.

Some errors that I had were that I put too little solution once and had to put more again. Or I put too much and the crystals did not want to grow, the material just kept on getting harder and harder. If I could do this project all over again I would probably on the beginning look up on the internet where crystals grow the best, and which crystal solutions are the best.

Modeling Mantle Convection Currents

Hello, in science class we were assigned to do an experiment. We had a big bowl of cold water, and a little jar of  hot water in side it with food coloring, and after the jar, we had plastic aluminum foil. That jar was stuck to the bottom of the big bowl and sprinkle pieces of paper on the cold water. And then we made 2 wholes in the aluminum foil. During this lab i have realized that once we made the wholes, the pieces of paper moved. That happened because we made the wholes, the warm water mixes with cold and made little currents which moved the pieces of paper. 

Mapping Earthquakes and Volcanoes

In science class we started studying earthquakes and volcanoes. We got a map of the earth a paper with locations of earthquakes and volcanoes. We had a task to find all the volcanoes using the locations, and label them. And we had a guiding question which is, Is there a pattern in the locations of earthquakes and volcanoes? And then had to talk about it, here is what I thought.

Guiding Question: Is there a pattern in the locations of earthquakes and volcanoes?



Hypothesis: What I saw is that most of the volcanoes and earthquakes happen on the coasts of countries. Also I noticed that they are both mostly in the south.

                                     

All the earthquakes are evenly distributed on the map, but they are mostly in the south scattered everywhere.

Volcanoes are also evenly distributed on the map, and they are usually close to seas and oceans. Also I realized that if there is a volcano, there is an earthquake close by. They are scattered all over the southern part of earth.


A relationship I see is that where ever I see a volcano or earthquake, there is another one close by.


If I add some additional volcanoes and earthquakes where ever I want, of course I would change the pattern because I will not put the volcanoes and earthquakes where they really occur. But if I put additional volcanoes and earthquakes that really occurred in real life. Then the pattern would stay the same.

As you can see in this photo the most recent earthquakes happened in Kopaonik, Kraljevo, Mionica and Cacak. But unfortunately there are not any active volcanoes in Serbia.


The closest earthquake to my home is the one that occurred in Mionica. The distance between my home and Mionica is 56 miles, or 91 kilometers.