Thursday, May 28, 2009

Conclusion for Plasticity Lab

The mixture of cornstarch and water that we created in class is similar to the Earth’s mantle because they both share the common trait of plasticity. Plasticity generally means ability to be shaped or formed. In our experiment, we mixed corn starch with just the right amount of water. If we put too much water, then we would end up with a mixture that is too much like water. When the mixture was just right, meaning when it was hard to stir it and the spoon started bending; it was mostly like and amorphous solid. It looked as if it was water, but in reality, it was just a solid that transformed into a liquid. We then took it out of the beaker and rolled it up into a ball. When we stopped exerting pressure, it melted and became liquid. This is just like the mantle because if it stopped receiving pressure from both sides such as the core and the crust, then the mantle would melt just like the goo we made.

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