cycle 2 week 4 ( The Screaming Quarter )

This video was about making a quarter scream. What they was tellimg me how to make a quarter scream. First you hva to get dry ice that does not melt at all. They was saying how if you leav and come back in a hour the dry ice will not melt but it will get smaller and that is called a sumplenment. Now if you put a qaurter on dry ice the gas would want to expand and the qaurter will vibrate. That is what make the qaurter scream which is he solid and gas. What i learned from this video is that gas and a solid can make a qaurter scream. But not just any qaurter it can do the same for metails to. I also learned that dry ice does not melt or make a pile of water it just get smaller without melting. That is was The Screaming Quarter Is About.

Chapter 9 open ended section 2 question 7

The promblem was that Kareem saw the moon over a tree at 9:00p.m. at position A then an hour later the moon had moved to position B. What caused this apparent change in position? The answer that i had put was that what caused the moon was that the moon was rotating on its axis around the earth. When the moon is rotating on its axis you can look in the sky and look at the moon and it will look like the moon is folowing you were ever you go. To me thats how you can tell when the moon is rotating on its axis thats my opinion. That is what caused the moon to be in a differnt position an hour later than the other hour.