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Java Games: Flashcards, matching, concentration, and word search. |
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7th Grade Science--Igneous Rock 11
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| A | B |
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| Igneous rock | made from metled rock |
| mafic | dark, denser, little silica |
| extrusive | Lava cools quickly on surface, small crystals, fine texture |
| intrusive | Magam cools slowly inside earth; formed large crystals, coarse texture |
| porphyritic | Magma cools slowly then quickly; large crystals on fine background |
| magma | molten rock inside the earth |
| examples of extrusive | obsidian, pumice |
| lava | molten rock that flows outside a volcano |
| crystal | a solid body wtih a special internal structure and enclosed by symmetrically arranged plane surfaces in a rock |
| examples of felsic | granite, pumice |
| examples of mafic | obsidian, basalt, gabbro, scoria |
| examples of porphyritic | porphyry |
| examples of instrusive | granite, basalt, gabbro, scoria |
| felsic | light, less dense, lots of silica |
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Chinese Bilingual Teacher, grades 6 to 12 |
West Windsor-Plainsboro High School South / Community Middle School |
| Princeton Jct., NJ |
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