Term
TEXTURE
(3:1 Classifying Rocks) |
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Definition
| The size, shape, and pattern of a rock’s grains. (p75) |
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Term
GRAIN
(3:1 Classifying Rocks) |
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Definition
| A particle of mineral or other rock that gives a rock its texture. (p75) |
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Term
IGNEOUS ROCK
(3:1 Classifying Rocks) |
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Definition
| A type of rock that forms from the cooling of molten rock at or below the surface. (p77) |
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Term
SEDIMENTARY ROCK
(3:1 Classifying Rocks) |
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Definition
| A type of rock that forms when particles from other rocks or the remains of plant and animals are pressed and cemented together. (p77,287) |
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Term
METAMORPHIC ROCK
(3:1 Classifying Rocks) |
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Definition
| A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions. (p77) |
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Term
EXTRUSIVE ROCK
(3:2 Igneous Rocks) |
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Definition
| Igneous rock that forms from lava on Earth’s surface. (p79) |
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Term
BASALT
(3:2 Igneous Rocks) |
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Definition
| Dark, dense, igneous rock with a fine texture, found in oceanic crust.(79) |
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Term
INTRUSIVE ROCK
(3:2 Igneous Rocks) |
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Definition
| Igneous rock that forms when magma hardens beneath Earth’s surface. (p79) |
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Term
GRANITE
(3:2 Igneous Rocks) |
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Definition
| A usually light-colored rock that is found in continental crust. (p151) |
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Term
PORPHYRITIC TEXTURE
(3:2 Igneous Rocks) |
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Definition
| An igneous rock texture in which large crystals are scattered on a background of much smaller crystals. (p79) |
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Term
SILICA
(3:2 Igneous Rocks) |
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Definition
| A material that is formed from the elements oxygen and silicon; silica is found in magma. (p80,186) |
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Term
SEDIMENT
(3:3 Sedimentary Rocks) |
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Definition
| Small, solid particles of material from rocks or organisms which are moved by water or wind, resulting in erosion and deposition. (p82,247) |
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Term
EROSION
(3:3 Sedimentary Rocks) |
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Definition
| The process by which water, ice, wind, or gravity moves fragments of rock and soil. (p83,247) |
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Term
DEPOSITION
(3:3 Sedimentary Rocks) |
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Definition
| The process by which sediment settles out of the water or wind that is carrying it, and is deposited in a new location. (p83,247) |
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Term
COMPACTION
(3:3 Sedimentary Rocks) |
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Definition
| The process by which sediments are pressed together under their own weight. (p 83) |
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Term
CEMENTATION
(3:3 Sedimentary Rocks) |
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Definition
| The process by which dissolved minerals crystallize and glue particles of sediment together into one mass. (p83) |
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Term
CLASTIC ROCK
(3:3 Sedimentary Rocks) |
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Definition
| Sedimentary rock that forms when rock fragments are squeezed together under high pressure. (p84) |
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Term
ORGANIC ROCK
(3:3 Sedimentary Rocks) |
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Definition
| Sedimentary rock that forms where remains of organisms are deposited in thick layers. (p85) |
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Term
CHEMCIAL ROCK
(3:3 Sedimentary Rocks) |
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Definition
| Sedimentary rock that forms when minerals crystallize from a solution. (p86) |
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Term
CORAL REEF
(3:4 Rocks from Reefs) |
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Definition
| A structure of calcite skeletons built up by coral animals in warm, shallow ocean water. (p88) |
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Term
ATOLL
(3:4 Rocks from Reefs) |
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Definition
| A ring-shaped coral island found far from land. (p89,474) |
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Term
FOLIATED
(3:5 Metamorphic Rocks) |
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Definition
| Term used to describe metamorphic rocks whose grains are arranged in parallel layers or bands. (p91) |
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Term
ROCK CYCLE
(3:6 The Rock Cycle) |
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Definition
| A series of processes on the surface and inside Earth that slowly changes rocks from one kind to another. (p94) |
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