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Minerals
Elements
49
Science
7th Grade
01/08/2014

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Cards

Term
What is a mineral
Definition
a naturally occuring, inorganic solid with a definite chemical composition and an orderly arrangemnet of atoms
Term
How many elements occur naturally in the Earth's crust
Definition
90
Term
What is the most common mineral and what elements does it contain
Definition
silocates
Term
What elements do silocates contain
Definition
smooth and durable
Term
specific gravity
Definition
density
Term
hardness
Definition
a measure of how easy a mineral can be
Term
What scale measures hardness
Definition
Moh's scale
Term
What is the hardest
Definition
diamond-10
Term
What is the softest
Definition
talc-1
Term
luster
Definition
a way a mineral reflects light
Term
cleavage
Definition
when mineral break along a plane
Term
streak
Definition
color of mineral's powder
Term
fracture
Definition
breaks unevenly
Term
appearance
Definition
color,texture
Term
What 2 things make up a gem
Definition
beautiful and rare
Term
What is an ore
Definition
a useful substance that can be made a profit
Term
What are 3 examples of an ore
Definition
Magnetite, hematite, bauxite
Term
smelting
Definition
when substance melts off another
Term
What is a blood diamond
Definition
Diamonds that originate from areas controlled by forces or factions
Term
In what form are these diamonds sold or traded
Definition
rough form
Term
At one time, what percent of the world's diamond production was represented by conflict
Definition
4 percent
Term
Why are blood diamonds bad
Definition
Thousands of people are used as slaves to get them
Term
What was the Kimberley Process
Definition
To discuss ways to stop the trade in blood diamonds
Term
What was the requirement of the Kimberley process scheme
Definition
Members are required to certify all diamond exports are produced by legitimate mining/sales have no contact
Term
Why hasn't the KP system worked
Definition
There is a lack of political will
Term
What is the problem with Zimbabwe
Definition
Robert M is making money despite the KP
Term
rock cycle
Definition
process that makes rocks
Term
erosion
Definition
movement of rock by wind or water
Term
weathering
Definition
rock broken down by wind, water, and ice
Term
igneous
Definition
cooled magma or lava
Term
metamorphic
Definition
formed by heat and pressure
Term
sedimentary
Definition
compacted/cemented sediment
Term
magma
Definition
molten rock below Earth surface
Term
lava
Definition
molten rock above Earth surface
Term
detrital
Definition
sedimentary rock made from sediment
Term
conglomerate
Definition
sedimentary rock made from pebbles
Term
sandstone
Definition
sedimentary rock made from sand
Term
shale
Definition
sedimentary rock made from mud and clay
Term
chemicals
Definition
formed from dissolved substances
Term
limestone
Definition
sedimentary chemical rock made from calcite (CACO3) and seashells
Term
halite (rock salt)
Definition
sedimentary chemical rock made from salt
Term
igneous rock
Definition
formed from cooled magma and lava
Term
intrusive
Definition
formed underground
Term
extrusive
Definition
formed above ground
Term
larger crystals
Definition
the larger it is, the longer it takes to cool
Term
have crystals
Definition
granite
Term
no crystals
Definition
volcanic glass, scoria, basalt, obsidian, pumice
Term
organic
Definition
formed from dead plants and animals
Term
coal
Definition
organic rock made from dead plants
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