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Ch. 10 Rock

8th Grade - Ch. 10 Rocks

QuestionAnswer
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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