Tyson's+Science+Page

This is my Science Page.

Here is what I learned during our study of Structures and Mechanisms.



Here is a picture of my group's bridge.When we were building it i thought it was going to come in first but it came in last.Group 6 came in first there bridge was really good.When we were building our bridge I noticed that the bridge was starting to fall already so we put more tape on the sides and on the bottom of the structure.When we put the weights on our bridge could only hold 250kg mr vangeel was going to put on 3kg but the bridge fell before he did. If we could improve our bridge we probalbly replain the whole sructure.



Here is our egg catcher. We came in second group 3 came in first there's was cool.Our egg catcher was a cool design I think that it is the best design we have made. When we were designing it we knew we had to make it have a good structure or else it would fail. We had a holder in the middle of our design to hold the egg we straped it to the structure by using cut up elastics. After we put the egg in we put tape all around it to make sure the egg wouldn't come out.



This is our house. Our house was very sucesful some of the other group's thought that our structure was a very good design but we thought that gruop 5's was good and that it was better than our's. On the side's we used long pieces of wood to glue walls to it and at the top of them we put the roof pieces on the tip's of it. When we pushed down on the top of the roof the force carried down into the walls and into the table. On the top on the roof we made the popsicle sticks messy because we had to rush but on the other sides of the roof it loked better.

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In science we are learning about phisical and chemical changes. A chemical change is were it totaly changes the color and the product can not turn back to it's normal color and like plastic what ever it is made out of it can never turn back into the ingredients that it was made out of because it is a chemical change. A phisical change is when you use ingredients from like a tree for a hockey stick they are made out of wood and the company will add stickers on it but when you don't want the hockey stick say you put it in the ground it would rot and change back into the wood from the tree so that is a phisical change.

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====The topic I chose is plastic. You all know plastic, we use it every day, it is everywhere, electronics, utensils, bags, and much more. A plastic is any material that can be shaped or molded into any form, some are naturally occurring, but most are man-made. Most plastic will not react chemically with other substances, so you can store soap, water, gasoline in a plastic container without dissolving the container itself. Plastics have changed the world. I am going to be talking about more specifically plastic bottle's.====

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==== Plastics are made from oil. How do they get petroleum? To get Petroleum they have to drill through rock or they build platform's in the water to get it out from the sea bed. The consequces when we get oil out is that when we drill into the rock there is risk of a oil spill which can pollute the water, and kill habitat’s. Another consequce is that when they are digging the machine that they are using is polluteing the air.====

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====At the factory they use p.e.t pelot's and they put them in a molding machine and it come's out into experiment glasse's that we use in class. After they do that they put them on a machine called a reheat strech blow molder in second's it make's it heat's each preform just enough to make the plastic malible then insert's a rod to strech the preform into it's botlle shape but it also blow's in air because it make's the preform go into a bottle shape mold. After they mold it they put cold water onto it to make it cool.==== ====“The Pacific Institute estimates that in 2006, it took the equivalent of more than 17 million barrels of oil to just produce bottled water for Americans. More than 2.5 million tons of carbon dioxide were produced bottling that water. ” ====

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Company’s distrubute plastic bottles with trucks. This pollutes the air.


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==== Plastic doesn't react chemically with most other substances, it doesn't break down. Therefore, plastic disposal poses a environmental problem. Plastic hangs around in the environment for centuries, so recycling is the best method of disposal. However, new technologies are being developed to make plastic from biological substances like corn oil. These types of plastics would be biodegradable (breaks down) and better for the environment. ====



Level 2: Light Red || Level 3: Orange Level 4: Tan Level 5: Yellow Level 6: Yellow-Green || Level 7: Light Green Level 8: Deep Green ||
 * Red Zone ||  Transition Zone  ||  Green Zone  ||
 * Level 1: Deep Red

I learned many things about the transformation during our exsperiments. I learned that every source of energy comes from the sun, because the sun makes the food then the food gives us energy, after we get the energy it alows us to move, also we provide kentic energy, with the kenetic energy we build structures that will make a different kind of energy. When we built our water wheel I learned that we used hydro to make the wheel turn then when the wheel makes kenetic energy, and when the wheel was turning it was making sound, finally when the wheel was turning we attached a string with a lion on the end and it pulled up the lion. This is what i learned when we studied abou transformation of energy.