The science ideas that i learned this week:

• I learned how to make different types of motion diagrams
• I also learned what they were used for and how they were created.
• To make a motion diagram you would first draw dots, just like on the dot diagram ( we stopped using that because they weren't that accurate and like Mr. Segen said,"they sucked"
• After drawing the dots you would draw arrows connecting them. The length of the arrows tells us the speed of the object, and the way that the arrow is facing tells us the direction. 
• You also label the positive and negative direction, and the origin.
• Then you write V1 V2 V3 V4.. over each point to show how many velocities there are.
• Motion diagrams can go up, down, left, and right.  Doing this will help the person that is looking at it really understand what the motion diagram is saying.  It will also be a lot more accurate.
• Another idea that we learned is the delta v. It is represented by a triangle and a v or just a big arrow.  it is the way to find change in velocity.  
• When an object is speeding up: delta v and v are going in the same direction
• When the object is slowing down: delta v and v are going in opposite directions.

• For homework on Wednesday I had to create a story and create a motion diagram.  My story was: The car was going at a steady pace, then it slows down to go through a yellow light, and then continues at a steady speed.  (I still don't know how to put pictures on here, but soon i will learn!!!) My motion diagram started off having the dots the same distance away from each other. This means that the arrows were the same length.  Then the dots got closer and closer together, and the arrows got shorter in length.  Then the dots sped up and went back at a steady pace, the arrows got longer and longer and then stayed the same length (just like at the beginning.)

What real world application is there?????

• In our every day lives we are speeding up and slowing down and now we found the proper way to record that.  When we drive, run, and walk we are speeding up and slowing down even if we don't notice it.

~kathy gagliano~       :):):):):):):):):):):)