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Science Chapter 6 Vocab
Earth Science Book Chapter 6 Vocab
17
Science
7th Grade
01/21/2009

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Term
Rock
Definition
A naturally formed group of minerals bound together; can consist largely of one mineral or several different minerals in varying quantities
Term
Igneous
Definition
Rock formed by the cooling and hardening (crystallization) of magma; one of 3 types of rock in the rock cycle
Term
Magma
Definition
The hot molten rock that forms beneath Earth's surface
Term
Sedimentary
Definition
Rock formed by the compaction and cementing of layers of sediments;one of the 3 types of rock in the rock cycle
Term
Sediment
Definition
Solid particles such as weathered rock fragments, plant and animal remains, or minerals that settle out or of solution onto lake and ocean bottoms
Term
Metamorphic
Definition
Rock that has undergone chemical or structural change due to the effects of heat and pressure; one of 3 types of rock in the rock cycle
Term
Rock Cycle
Definition
A repeated series of events by which rock gradually and continually changes between igneous, sedimentary and metamorphic forms
Term
Felsic
Definition
A type of magma rich in silica that forms light colored igneous rock containing minerals such as quartz and feldspar
Term
Mafic
Definition
Type of magma rich in iron and magnesium and low in silica; forms dark-colored igneous rock containing minerals such as hornblende, augite, and biotite
Term
Pluton
Definition
Intrusion of magma into Earth's crust, creating igneous rock formations such as dikes, sills, laccoliths, volcanic necks, and batholiths.
Term
Batholith
Definition
A large mass of igneous rocks exposed by erosion at Earth's surface; forms the core of many mountain ranges
Term
Cementation
Definition
The process by which minerals precipitate out of solution to fill the spaces between sand grains, pebbles, or other rock particles and bind fragments together
Term
Stratification
Definition
The arrangement of layers of sedimentary rock
Term
Fossil
Definition
The remains, impression, or any other evidence of life from another geologic age preserved in rock
Term
Parent Rock
Definition
The original rock material that forms metamorphic rock
Term
Metamorphism
Definition
The process by which a rock's structure or composition is changed by pressure, heat, and moisture
Term
Deform
Definition
The changing of a rock's shape by heat, friction, stress, and pressure
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