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Comparing flat and dome shaped drain covers.Featured science projectScience project video

Conclusion

The hypothesis that a flat drain coverS will  more easily become clogged by debris is correct.

Drain hole covers are also found in kitchen sinks, bathrooms and roof gutters. They are there to prevent any large debris or rubbish from entering the plumbing pipes and causing blockages. Even though the surface of the drain hole cover needs regular cleaning to remove the debris, this is much easier to do compared to clearing blockages that occur inside the plumbing.

 

Also consider

Try to repeat this science fair project using different type of debris like paper, rocks, broken branches or sand.

The experiment can also be repeated using cone shaped, pyramid shaped or box shaped drain hole covers.
 

References

How to cover and open a drain hole - http://www.doityourself.com/stry/how-to-cover-an-open-drain-hole

Blocked drain and blocked drainage - http://www.articlesbase.com/home-improvement-articles/blocked-drains-and-blocked-drainage-394320.html
 

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Complexity level:
6
Project cost ($):
30
Time required:
1 day to prepare, 1 hour for experiment
Material availability:
May be obtained from a hardware store
Safety concerns:

None