928499
Descrição
FlashCards por Shane Buckley, atualizado more than 1 year ago
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Criado por Shane Buckley
aproximadamente 10 anos atrás
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| Questão | Responda |
| Igneous | They are formed as a result of volcanic activity. Hot molten magma escapes from the mantle. It cools and solidifies quickly into rock on the earth's surface or slowly deep inside the crust |
| Sedimentary | They are formed from the particles of rocks and dead plants and animals(fossils). They were deposited on sea and lake beds as well as on land. Layers of this material built up over time and were compressed and cemented creating solid rock. |
| Metamorphic | They are formed from rocks that already exist. They form when igneous or sedimentary rocks are changed into new harder rocks by great heat or pressure or sometimes both. |
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