Earth Science- Chapter 2

Flash Cards for chapter 2. Mostly definitions and questions.

18 cards   |   Total Attempts: 188
  

Cards In This Set

Front Back
Mineral
A naturally occurring inorganic solid with a definite chemical composition crystalline structure.
Element
A substance that cannot be broken down into other substances by ordinary chemical means.
Rock Forming Minerals
Minerals in the Earth's crust that combined to make most rocks.
Crystal
A solid element or compound whose atoms are arranged in a regular, periodically, repeated pattern.
Cleavage
The tendency of some minerals breaks other than along planes of cleavage
Crystal face
The flat surface that develops if a crystal grows freely in an uncrowded environment
Fracture
A manner in which a mineral breaks other than along planes of cleavage.
Hardness
The resistance of a mineral to scratching
Streak
The color of the fine powder of a mineral
Luster
The quality and intensity of light reflected from the surface of a mineral.
Ore Minerals
Minerals from which metals or other elements can be profitably recovered.
Industrial Minerals
Rocks or minerals that have economic value exclusive of metal ores, fuels, and gems.
Gem
A mineral that is prized for its rarity and beauty rather than industrial use.
What are the two most abundant elements in the Earth's crust? What percent does they each make i weight?
Oxygen and Silicone. 75%
Even though there are over 3500 minerals known, how many rock forming mineral groups are there?
9 groups