Andrew

 Week 5 5/21/09 This week I learned about all of the cool things you can do with liquid nitrogen. Mr Burtis froze a piece of lettuce and dropped it and it broke like glass also I got to eat a frozen carrot Mr Burtis has a lot of cool things he does for the class like also this week we got to play with carbon dioxide frozen 9 dry ice. Also I learned that Carbon dioxide freezes at -75 degrees Celsius. Week 4 4/30/09

This week I learned about scientists theories about plate tectonics even though I think it's not plausible Mr. B said that their is liquid under the plates that when heated by the core moves slowly but surly over the century and started when the earth was formed. Another thing I learned about was that in one galaxy the center has two black holes for the center of the galaxy that everything orbits around but most galakies only have one black hole or a very large star at the center.

Week 3 4/17/09 This week a relearned all about ecology. something I learned was that the area were life exists on earth is very small boy do we need to preserve it because many animals are already disappearing. Something I have a question about is are some animals both decomposers and consumers like worms they eat dirt and decompose 





 Week two 4/7/09 This week I learned the names of the scientists who made the cell theory Vercue, Swan, and Sliden.I also learn that their are many good things about being multicellular like being able to live long because you don't have to rely on one cell surviving to live another is your cells don't have to work as hard because they have specialized jobs not everything to maintain the organism and the last thing is you are larger than predators and have more things that you can eat more smaller things. A question I have is exactly what do the microtubles do when the cell is spliting into two cells.



 Week one 3/19/09   I learned that ribosomes make energy for the cell I learned that in the pretest I think I did well because I learned about cells in 6th grade I also learn that the nucleolus is in the nucleus even though I don't know what it does I think it has something to do with DNA and holding it (because That is one of the things that the nucleus. And a question I have is do all cells have chloroplast becuase I don't know what it does I'm not sure what it does.

 Practice paragraph  3/17/09  I Learned that anybody can look at a wiki and that you can still be in a discussion even if you have not joined. My question is: Can you just make a wiki if you do not have an account. 