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Ch. 10 Rock
8th Grade - Ch. 10 Rocks
| Question | Answer |
|---|---|
| What type of scientist studies the classification and origin of all types of rocks? | Petrologist |
| What gives rocks its texture when individual rock particles, crystals and sometimes fossils combine? | Grains |
| What do young-earth geologist believe were the first or basement rocks created on the 3rd day? | Igneous |
| What type of igneous rocks contain the largest crystals that are usually interlocking? | Pegmatite |
| What type of igneous rocks contain a few large mineral grains set in a very fine textured rock? | Porphyry |
| What type of igneous rock contain distinct mineral grains that are small and more-or-less the same size? | Phanerite |
| What type of extrusive igneous rocks have crystals that cannot be seen without the aid of a microscope? | Aphanitic |
| What type of igneous rock has pockets of gas bubble and can float like a cork? | Pumice |
| What type of igneous rock formed so quickly no crystals are visible making it smooth and shiny like glass? | Obsidian |
| What is the first step in the formation of a sedimentary rock? | Erosion and Solution |
| What is the second step in the formation of sedimentary rock? | Transportation and Deposition |
| What is the third step in the formation of sedimentary rock? | Compaction |
| What is the fourth step in the formation of sedimentary rock? | Cementation |
| What are rock fragments called? | Clasts |
| What are three sizes of clasts? | Pebbles, Sand and Clay |
| What type of sedimentary rocks are formed from minerals precipitated from water? | Non clastic |
| What type of rock can contain fossils? | Sedimentary |
| What type of rock appear to have changed from its original form, usually from heat or pressure? | Metamorphic |
| What type of metamorphism is caused by hydrothermal fluids? | Chemical Metamorphism |
| Where will most rocks end up according to the old-earth version of the rock cycle? | Mantle and melt |
| What type of rock forms when molten rock cools and hardens? | Igneous |
| What type of rocks form from bonded rock fragments or fossils or from precipitation of minerals from supersaturated water solutions? | Sedimentary |
| What type of metamorphic rocks contain crystals in band or parallel layers? | Foliated |
| What does limestone become after it has undergone metamorphosis? | Marble |
| How are rocks classified? | Size, shape and pattern of grains |
| What geological event caused the widespread existence of sedimentary rocks? | Flood |
| What three conditions cause metamorphism of rocks? | Heat, Pressure, Hydrothermal Fluids |
| What type of rock is basalt or andesite? | Extrusive Igneous |
| What type of rock is conglomerate or breccia? | Clastic Sedimentary |
| What type of rock is granite or gabbro? | Intrusive Igneous |
| What type of rock is limestone or chalk? | Nonclastic Sedimentary |
| What type of rock is marble or quartzite? | Nonfoliated Metamorphic |
| What type of rock is slate or gneiss? | Foliated Metamorphic |
| What law states that matter can change form but not mass? | Conservation of Matter |
| What makes up rocks? | Two or more minerals |
| What size are the crystals in an intrusive igneous rock? | Large |
| What size are the crystals in an extrusive igneous rock? | Small |
| What sedimentary rock can be both inorganic and organic non clastic sedimentary rock? | Limestone |
| What organic sedimentary rock is formed from the remains of living organisms? | Chalk |
| What type of rock is the starting material fro most versions of the rock cycle? | Igneous |
| What type of rock can be formed from sedimentary, igneous or other metamorphic rocks? | Metamorphic |
Created by:
kpmueller
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