# Domino Theory *

 Difficulty Time Required Average (6-10 days)
*Note: This is an abbreviated Project Idea, without notes to start your background research, a specific list of materials, or a procedure for how to do the experiment. You can identify abbreviated Project Ideas by the asterisk at the end of the title. If you want a Project Idea with full instructions, please pick one without an asterisk.

## Abstract

Have you ever set up a line of dominoes and watched them fall? If you wanted to make your line of dominoes fall faster, do you think you should set the dominoes up with more or less space between them? Set your dominoes up in a straight line, using a ruler to keep the spacing between them constant. Try different spacings at 0.5cm increments. Conduct multiple trials at each spacing, and time how long it takes for a fixed total length of dominoes to fall (e.g., a 1.5 or 3.0 meter length of dominoes). Average your results for each spacing. At which spacing do the dominoes fall the fastest? Can you explain your results? Can you predict the optimal spacing for a set of taller (or shorter) dominoes? Find another set and test your prediction! (Gatanaga, D.A., 2004)

### MLA Style

Science Buddies Staff. "Domino Theory" Science Buddies. Science Buddies, 20 June 2014. Web. 29 May 2017 <http://www.sciencebuddies.org/science-fair-projects/project_ideas/ApMech_p034.shtml>

### APA Style

Science Buddies Staff. (2014, June 20). Domino Theory. Retrieved May 29, 2017 from http://www.sciencebuddies.org/science-fair-projects/project_ideas/ApMech_p034.shtml

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Last edit date: 2014-06-20

## Bibliography

Gatanaga, D.A., 2004. "How Does the Distance Between Dominoes Affect the Speed That Dominoes Fall?" California State Science Fair Project Abstract [accessed April 18, 2006] http://www.usc.edu/CSSF/History/2004/Projects/J0211.pdf

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