Rock_identification_8

Rock_identification_8 - Fragmental The rock contains...

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Fragmental The rock contains broken, angular fragments of rocky materials produced during an explosive volcanic eruption. 5. The igneous rock illustrated in Figure 2.2 is made of large mineral crystals that are all about the same size. The rock formed from magma that cooled (slowly, rapidly) (inside, on the surface of) Earth. Circle your answers. 6. The rock shown in Figure 2.5 is made of mineral crystals that are all small and not identifiable without a microscope. The rock formed from magma that cooled (slowly, rapidly) (inside, on/ near the surface of) Earth. Circle your answers. 7. The igneous rock in Figure 2.6 has a porphyritic texture. The large crystals are called _____, and the surrounding, smaller crystals are called 8. The rocks in Figures 2.2 and 2.3 have nearly the same mineral composition. What fact about the mineral crystals in the rocks makes their appear- ances so different? What caused this difference? 9. Sketch a diagram showing the arrangement of the
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