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Stack #786952

QuestionAnswer
which properties are commonly used to identify minerals? cleavage or fracture, shape and color, streak,mass, hardness
rocks that are produced when melted rock cools and hardens are called _____ rocks. igneous rock
the word metamorphic means .... change in form
broken pieces of rock are deposited into piles and are cemented together by other minerals. What type of rock has been formed? sedimentary rock
the size of mineral crystals in igneous rock depends on ...... the speed that the rock cools
waste rock must be removed before a mineral can be used is called _____. Gangue
stable molecules that contain carbon and are formed below sea level under low temperatures and hugh pressures are called _______. methane hydrates
materials of low mass are ____ together to form a substance of higher mass during nuclear energy. fused
_____ is a chemical process that removes unwanted elements from the metal being processed. smelting
the removal of coal that is not close to earth's surface through a horizontal opening in the side of a hill or mountain is called _____ Drift mining
what are other ways coal is removed? strip and slope mining
coal oil and natural gas are ___________ nonrenewable resources
coal oil and natural gas that formed from decaying plants and other organisms over millions of years are called _____ fossil fuels
most abundant fossil fuel? coal
_____ are compounds containing hydrogen and carbon atoms hydrocarbons
rocks that are produced when magma or lava cools and hardens are called ______ igneous rock
how many minerals have been found so far? 4,000
which properties are used to identify minerals? cleavage or fracture, shape and color, streak,mass, hardness
broken pieces of what types of rock are deposited into layers and cemented together to form sedimentary rock? shells, minerals, grains, and other sediments
the rock cycle shows each rock ______ in an continuing journey
how are rocks classified as igneous, sedimentary, or metamorphic? based on how they are formed
unwanted elements are removed from metals by a process called _____ smelting
steps of coal formation peat,lignite,anthracite coal is formed,bituminous coal is formed
a mineral is called an ore if..... it contains enough useful mineral to be sold at a profit
intrusive igneous rock form under earths surface
extrusive igneous rock form on earths surface
two kinds of metamorphic rocks foliated and nonfoliated
potassium fertilizer sylvite
used to make glass silica
melts ice on roads halite
used as crushed rock or part of cement limestone
an iron ore hematite
used in abrasives corundum
used to make sandpaper garnet
helps make aluminum bauxite
made of crushed stone or mixture of gravel and sand aggregate
Created by: jgonca4861
 

 



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