wiki Word: Pumice |
| PRONOUNCIATION KEY: Pum-is |
Definition: a rock made from lava with many holes that make it very lightweight.
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When lava hardens it has bubbles of gas which make holes in the rock. Later, air goes into the holes which makes the rock very light and is one of the reasons it floats. Pumice is usually light in color ranging from grey to white. It is also the only stone that is able to float.
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We are studying volcanoes and lava makes this rock. We are also trying to find out what kind of rocks and surface features are on Mars. |
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"Pumice." Wikipedia. 2008. Wikimedia Foundation, INC. 31 Jan 2008 <http://en.wikipedia.org/wiki/Pumice>. http://z.about.com/d/geology/1/0/J/W/pumice500.jpg http://www.gc.maricopa.edu/earthsci/imagearchive/floating_pumice_big.jpg
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Orginal Author: (first name, last initial and class period)
| Gabriela P. 7th |
Comments: Please include your first name and last initial and your suggestions to improve this vocab entry.
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