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rocks and mins

Review for 6th grade rocks and minerals test

QuestionAnswer
A naturally occurring, inorganic solid with a definite chemical composition and crystal structure mineral
the powdered form of a mineral left when striking on a porcelain tile streak
the amount of light reflected by a mineral luster
You perform a scratch test to check this property of minerals hardness
orthorombic, monoclinic are examples of this property of minerals crystal form
This happens when a mineral breaks in flat sheets cleavage
This happens when a mineral breaks in chunks with jagged edges fracture
This chart tells us 10 common minerals and how strong they are in relation to each other Moh's Scale of Hardness
A combination of 2 or more minerals a rock
formed by pressure of layers piling up over a long period of time Sedimentary rock
Types include organic, detrital and chemical sedimentary rocks
Type of sedimentary rock formed from the remains of living things organic
Type of sedimentary rock formed from the layering of sediments on top of each other detrital
Type of sedimentary rock that forms when minerals are dissolved in water...the water evaporates and leaves behind mineral chemical
This type of rock is formed through compaction and cementation sedimentary
Small pieces of rock and other material that help form sedimentary rock sediments
The breaking up of rocks into smaller pieces/sediments weathering
The carrying away of small pieces of rock after it has been broken up erosion
Melted rock below the earth's surface magma
melted rock that comes above the surface of the earth lava
rock that forms as a result of cooled magma or lava igneous rock
rock that forms inside the earth's surface intrusive igneous rock
rock that forms on the surface of the earth extrusive igneous rock
Rock that forms as a result of heat and pressure deep in the earth metamorphic rock
examples of this type of rock include granite, pumice and obsidian igneous rocks
examples of this type of rock include gneiss and marble metamorphic rock
This diagram shows us that a rock can change over time and become a different type of rock rock cycle diagram
This extrusive igneous rock is rough and has holes all over. It is formed from a violent eruption. It is also the only rock that can float. pumice
This shiny extrusive rock cools quickly and was prized in ancient times for its trading value obsidian
A metamorphic rock that has layers foliated
A metamorphic rock that does not have layers non-foliated
Created by: Rwoods on 2012-02-07



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