Marbles on the ramp.
|
Trial 1 |
Trial 2 |
Trial 3 |
Trial 4 |
Trial 5 |
Average |
|
|
Marble 1 |
1.81 |
2.13 |
1.40 |
1.01 |
1.10 |
2.558 |
|
Marble 2 |
1.45 |
1.44 |
1.28 |
1.25 |
1.20 |
1.324 |
|
Marble 3 |
1.35 |
1.11 |
0.88 |
1.60 |
1.12 |
2.692 |
1. What did I learn from the experiments?
I learned that the force that makes the marbles go down the ramp is gravity. They start out slow and start going faster and faster and faster! Friction is the force that slows the marbles down. The bigger the marble is, the faster it will go down the ramp. More mass = more speed. If you put baking oil on the ramp, the marble will go down faster because the friction is reduced. We did another experiment. If you rub your hands together it gets warm. That is the friction that you make when you rub your hands together. We also did this experiment where you bend a paperclip in a v shape. Then you keep bending it back and forth really fast and put it on your bottom lip and it is warm!
2. How will we apply that to our pinball machine?
The marble on the ramp is like the marble rolling down our pinball machine. The force of gravity will pull the ball down and the friction might slow it down a little bit. But the ball will hit the other obstacles and bounce off of them.
Hi Elaina,
Once again, you did a really nice job of writing with detail. I can tell you are learning a lot and you do a nice job of clearly explaining what you learned.
I have really enjoyed reading everything on your blog! Thank you for sharing your writing with me. Keep up the good work!I’m sure you will do many more great things as a writer.
~Sarah
Dear Sarah, I am very glad that you are my blog buddy! Thank you for taking the time to look at my blog. And thanks for all of the comments and encouraging notes.
Your friend,
Elaina