Wednesday, May 27, 2009

Plasticity Lab Conclusion

In green science we did a lab activity on plasticity. Plasticity is a state in which the earth's mantle is in and that is when there is extreme pressure and heat it is a solid. Yet, when it relived of some of that pressure it becomes a hot gooey liquid. The lab activity included corn starch, a small amount of water, and a spoon. We first put a quarter cup of corn starch in then the water and stirred. As it joined together it was becoming more of a solid yet still a liquid. Then, each member of our lab group took a handful and rolled it around in their hands to demonstrate the extreme pressure on the earth's mantle. As, it was rubbed around it became a solid but when you stopped rubbing it became a gooey liquid. All in all, this lab was a fun actvity which clearly demonstrated the plasticity of the earth's mantle.

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