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Earth Investigations
Note Cards for Final Comprehensive Exam
20
Science
Undergraduate 2
12/18/2008

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Cards

Term
3 Types of clastic rocks
Definition
1. siltstone
2. conglomeratre
3. breccia
Term
3 Characteristics of minerals
Definition
1. naturally occuring
2. inorganic
3. chemicl element or compound
Term
2 Causes of metamorphism
Definition
1. increase in pressure
2. chemically active fluids
Term
2 Changes which may occur when rocks are metamorphosed
Definition
1. changes in color
2. foliation
Term
Define; mineral streak
Definition
the color of the powdered form of a mineral
Term
Define; hardness
Definition
the mineral or rocks ability to scratch or be scratched
Term
Define; mineral cleavage
Definition
the tendency of a mineral to break along definite planes of weakness
Term
Define; specific gravity
Definition
mass of a mineral divided by its volume, or how much water it displaces
Term
Define; oxide with an example
Definition
any compound of oxygen with another element or a radical

ex. iron oxide/ rust
aluminum foil
Term
Define; carbonate, with an example
Definition
minerals containing the carbonate ion

ex. calcite
Term
Define; intrusive igeneous rock, with an example
Definition
a rock formed when magma solidifies within bodies of pre-existing rock

ex. gabbro
Term
Define; clastic rock, with an example
Definition
a rock created through the mixing of a mineral and ground water with other materials
Term
Define; foliation
Definition
laying in rock caused by metamorphism
Term
Define; foliation
Definition
laying in rock caused by metamorphism
Term
Define; fossil
Definition
the preserved trace, imprint, or remains of a plant or animal
Term
Define; weathering
Definition
the decomposition of disintegration of rocks and mineral at Earth's surface by mechanical and chemical processes
Term
Define; regolith
Definition
any unconsolidated rock material overlying bedrock
Term
Define; pedalfer
Definition
common soil type that forms in humid environments characterized by abundant iron and aluminum oxides
Term
Define; laterite
Definition
highly weathered soil rich in oxides of iron and aluminum that usually develops in warm tropical areas
Term
3 Types of physical weathering
Definition
1. freezing and thawing
2. wetting and drying
3. heating and cooling
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