Intro to Minerals
Rock Properties
Valuable Rocks
Journey of a Rock
Hot Lava
100
Rocks are composed of two or more of these
What are minerals?
100
Some minerals split into thin, neat sheets and are said to have this physical property
What is cleavage?
100
A term for a rare mineral that can be cut and polished
What is a gem?
100
These form from melted rock
What are igneous rocks?
100
a common organic rock, used by teachers
What is chalk?
200
You could use these to identify an unknown mineral
What are physical properties?
200
Arrowheads display this breakage property.
What is fracture?
200
A mineral that contains enough of a useful product to be sold for a profit
What is an ore?
200
Below the surface of the earth, and an igneous rock
What is an intrusive igneous rock?
200
Rocks that have changed form
What are metamorphic rocks?
300
This term refers to solid materials that have atoms arranged in repeating patterns.
What is a crystal?
300
A term used to describe how shiny a mineral is
What is luster?
300
Digging into the earth to find minerals
What is mining?
300
Melted, shot out of a volcano? Then its this type of rock
What is extrusive igneous rock?
300
How a metamorphic rock changes back into sediment
What is weathering or erosion?
400
To perform this test, scrape an unknown mineral across an unglazed, white tile.
What is a streak test?
400
Mohs scale is used to determine this quality of a mineral
What is hardness?
400
The hardest of all gems
What is a diamond?
400
a crack in the earth's surface, where lava flows out
What is a fissure?
400
Metamorphic rocks with no distinct layers
What is non-foliated?
500
Slight impurities in a mineral sample could change this physical property of a mineral.
What is the color?
500
Most of the rock-forming minerals are of this type
What are silicates?
500
the number of known minerals
What is 4000?
500
rocks formed from sediments collected in layers
What are sedimentary rocks?
500
This is constantly happening to rocks underground
What is change?
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