Ryan

WEEK FOUR: On monday our class went on the internet and got some background information about frogs because on tuesday we started our disection. Some things that I learned while getting background information is that frogs main enemies is in fact pollution. I also learned that there are five stages of the frog life cycle. 1st they spawn, 2nd is the egg,3rd is the tadpole, 4th is the tadpole with legs, and 5th is the frog these are some things that i learned . I also learned many things while we were disecting frogs. one thing i learned is that a frogs tonuge is not attached to the back of a mouth like a humans, it is attached to the front of the mouth.I also learned that a frog has two sets of teeth. They are the vomerine teeth which are found on he roof of the frogsmouth and the Maxillary teeth that are found on the edges of the frogs mouth. Both are used for holding prey.

A question that i have is why is the elk populations of Yellowstone decreasing so much? Is it because of hunting and climate change, or is it mostly because of the wolf populations increasing around the Yellowstone area? And will there be more deer and bison because of wolves mostly feeding on the elk or will the populations be balanced?

WEEK THREE: Some things i learned in week three was we learned about the conservation of energy. The law of conservation states that energy can not be created or distroyed. I also learned the 2 types of energy are Kinetic energy and potental energy. potental energy is known as stored energy and kinetic energy is energy of motion. We also did two labs. in the first lab i learned that in order to get matches to burn in a jar by only starting them with matches you need to concentrait the suns rays to a small as you can. I also learned that if you do get the matches to light and the cap is not on tight the cap will blow off the jar. In the second lab i learned the gas produced by vinegar and bakind soda is carbon dixoide. One thing that i was wondering i what kind of stored or potental energy does floor boards have?

WEEK TWO:One thing that i learned about this week is that metals are very good conductors of heat and electricity. I also learned about the characteristics of Metales ans non- metals. Some Characteristics of metals are that they are shiney, they are malleable, they conduct eletricity well, they are good heat conductors and they are ductile. Another thing that I learned about non-metals the Charateristices of non-metals. Some of the charateristics of non-metals include they are very brittle, they are very poor conductors of eletricity, they are not ductile, they are not that malleable, they are also poor conductors, and they are vey dull. One thing i learned about non-metals is they are mostly the opposite of metals. One question that i have when we did the metals lab yesterday alex applied HCl to carbon it turned red. Why would it turn red when nobody eles did? There must have been some kind of other substance in the Acid that made it react or maybe there was another type of element on the carbon that reacts to HCl like that.

WEEK ONE: Something that I learned about was how to draw valence electrons. One thing i learned is that the atomic mass of a element is always bigger than the atomic number. I also learned that an atom always has a neutral or no charge. If it has a positive charge then it becomes a ion. Another thing i learned is that whatever period an element is in determines how many energy levels it has. And the group that it is in determines how many electrons are in the outer shell.

Another thing that i learned about in science last week is about the Periodic Table of Elements. The man who first put the Peridoic table together was a man named Dmitri Mendeleeve. He put the Table together in 1869 by density, apperal, and melting point but then he arranged them in order from increasing Atomic Mass. When he did the he noticed a pattern. I also learned that Neon's atomic number is 10.