Tuesday, May 17, 2011

Marble motion

In my science class we did a lab about motion. we were seeing how hard you had to blow on marbles for them to move. Me and my partner had no problem with that because they always moved.

Guiding question- Does the mass of the marble affect how it moves?
When given a force, what happens to it's motion?

Hypothesis- I think that the smaller and lighter ball will move easier and faster.

Materials

  • small marble
  • big marble
  • tennis ball
  • metal marble
  • ping pong ball
  • small foam ball
Data my partner and I got


Small marble- light breath- moved 10inches
Hard breath-40+inches
Big marble- light breath - 22in.
Hard breath-40+ in.
Metal marble- light breath- 22in.
Hard breath- 40+ inches
Ping pong- ball light breath- 40+ in.
Hard breath-40+ in.
Small foam ball- light-40+ in.
Hard breath-40+ in.
Tennis ball- light breath- 6 in.
Hard breath- 16 in.

Data analysis

I can tell from the data I got that  the weight is a big factor in how far and fast the ball will move.  Also all the balls moved left and right they did not go in a straight line. It was not so much how big it was if it was light. The one that moved the least was the tennis ball because it was heavy and big, but it did move. One that was not that small was the ping pong ball, and it moved the farthest. It was hollow and very light.

 Conclusion

From my data I can tell that my hypothesis was incorrect. Actually it does not really matter on a balls size when it is moving unless it is really big of really small. It really only matter on it's mass. If it is light it will move far and fast, but heavy it will move a bit and slowly.  I also noticed that the balls almost never went in a straight line they would always be going to the left and the right. When you give the balls a  lot of force they move much faster, easier, and slower. If you do not really give to much force it will not move too much unless it is really light.

Further inquiry

If I were to do this project again I would use a bigger variety of balls. Another thing that  I would do is to make a track so it could not curve too much. Also I would weigh each of them to get a better answer. All in all I am happy with how I worked with my partner and did in general. If I did this again though I know there are ways I could do better.



           

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