Science blog 10.26.09

-This week i learned what a physical quantity is.  Examples of physical quantity are: meters, kilometers,grams,inches,quarts,pounds,miles,feet,and cups.  

-We also learned how to make graphs, dot diagrams, and tables.  These show how fast an object is moving, and if it moving at a constant pace.  

-If an object starts moving very slow and then continues to speed up, the dot diagram would look like this: . . .  .   .    .     .      .       .        .         .

-If an object starts fast and slows down, the dot diagram would look like this: .      .     .     .    .   .  . . . ....

-If the object stays at a steady pace, the dot diagram would look like this: .   .   .   .   .   .   .   .   .   .

-We made the graphs by labeling the x axis TIME and the y axis POSITION. 

-On Friday we used a motion detector/graphing machine.  Mr. Seagan would draw a graph on the board and we would have to figure out how to move so that the graph on the machine and the graph on the board would look the same.  It was challenging at first but once my classmates helped me and told me how to move we got the graph on the machine to look exactly like the one on the board!!!!!!