Preston

Week 4 May 15** 1. This week, in science I learned about dissecting frogs and frog anatomy. The anatmy o a frog is external, internal, urogenital, and the brain. An evaluation of the external anatomy would be the Vomerine teeth, Eustachan tubes, Nictditating membrane, tympanic membrane, esophagus, glottis, and the tounge. 2. Dissecting the frog was different, since we were cutting a deceased lifeform open we used some surgean terms, like incesion. We made the vertical "Incesion" up the frog's ventral (belly) to the chest bone. Then we made four horizontal cuts in order to open the chest. After cutting open the muscles in the chest my partner and I examined these interal parts, fat bodies, peritonium, liver,heart, lungs, gall bladder, stomach, small intestine, large intestine, spleen and the esophagus. My partner and I, lastly, studied the uogenital system. we discovered that our frog, lil' muhamed, is a boy. 3. What I am still wondering about is what kind of dissection procedures use a scalpal.
 * 5/15/09

4/13/09 April 23
 * Week 3.

1. This week in science, Iearned the differnce between Kinetic and potential energy. Kinetic energy is energy that is normally active like energy of motion and Potental energy is stored energy. I also learned the types of enegy in each group, for example, Kinetic energy has radiant energy which is electromagnetic energy that travels through transverse waves. Potential energy has gravitation anergy which is eergy of position or place. One thing that confused me was how in our lab of conservation of matter, the mass of the baking soda and vinegar didn't change when the baking soda dissolved.

Week one

In science class this week, I learned how to label basic atomic structure using Bhor model. Atomic structure consists of how many protons and neutrons in the neucleus of an atom and how many electrons are in the valence shell surrounding the nucleus. Finding how many protons and neutrons in the neucleus took a few tries to fully understand but it goes like this: protons are found by just using the atomic number as the protons. To find neutrons, just take the atomic mass and subtract it by the atomic number, that will be your # of neutrons. Last, to find electrons on the outside of the valence shell, use the number of protons and mark them on the valence shell in certain amount of numbers based on the group number. What I'm curious about in science is how did the scientsts determine what an atom looks like?

Week 2 April 17 1. In science lab this week, I learned that most metal compounds have a fizzing reaction to the acid substance provided by Mr. Burtis. I also learned what metals, non-metals, and metaliods are either malleable or brittle, most coumpound samples we had were brittle. 2. Another phenomina I learned was how an atom can become an ion. An atom can become an ion if it loses an electron and becomes a charged particle. 3. Someting that's on my mind that I don't quite get is why so many people went with Aristotle's basic theory and not Democritus' more logical yet primitive explination of atomic structures. As far as I see, like the denial of the theory of Evolution, religion chose which explination was more fit with the bible and their ways, now I'm not putting down religion, I just think that's how people are.**