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- 1. Multiple ChoiceWhich terms best describe igneous rocks?light and easily brokensoft and smoothhard and densesoft and dense
- 2. Multiple Choice_____ is an igneous rock made up of the minerals quartz, mica, feldspar, and hornblende.granitebasaltpumicegneiss
- 3. Multiple ChoiceHow do coarse-grained igneous rocks form?from sedimentary rocks changed under pressurefrom large rock particles cemented togetherfrom rapidly cooling lavafrom slowly cooling magma
- 4. Multiple Choice
Which igneous rock is an extrusive rock?porphyryrhyolitepegmatitegranite - 5. Multiple ChoiceSlow cooling magma far beneath Earth's surface results in _____ texture.coarse-grainedfine-grainedglassy
- 6. Multiple ChoiceRapid cooling of lava in which tiny crystals form results in _____ texturecoarse-grainedfine-grainedglassy
- 7. Multiple ChoiceExtremely rapid cooling of lava in which no crystals form results in _____ texture.coarse-grainedfine-grainedglassy
- 8. Multiple ChoiceWhat is the most common type of extrusive rock?basaltgraniteobsidianporphyry
- 9. Multiple ChoiceIgneous rock that formed when magma hardened beneath the surface of Earth is called _____ rockintrusiveextrusiveclasticsilica
- 10. Multiple ChoiceLava that is low in silica usually forms _____ colored rocks.darklight
- 11. Multiple ChoiceOne common use for the igneous rock pumice is...building materialcutting toolsabrasion in polishingcement
- 12. Multiple ChoiceOne common use for the igneous rock obsidian is...building materialcutting toolsabrasion in polishingcement
- 13. Multiple ChoiceOne common use for the igneous rock granite is...building materialcutting toolsabrasion in polishingcement
- 14. Multiple ChoiceA slow cooling igneous rock will have _____ crystalslargesmallaverageblack
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