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- Independent Variable
- Dependent Variable
I believe that the height of the track will not affect the speed of the marbles , Also that I think marbles #1 might win.
- Controlled Variables
What are marbles and what are they made of?
Procedures/Steps
Will the height of the track affect the speed of the marble?
Marbles have been made of all kinds of materials throughout history. At first they may have been simple round stones or clay balls. More recently they have been made of actual marble, clay, porcelain, glass and steel.