Classifying Rocks
Igneous Rocks
Sedimentary Rocks
Rocks From Reefs
Metamorphic Rocks
100
The rock's mineral compostion, color, and texture.
When studying a a rock sample, what do geologists observe ?
100
According to their orgin, texture, and mineral compostion.
How do geologists classify igneous rocks ?
100
Erosion, Deposition, Compaction, and Cementation.
What is the processes that sedimentary rocks go through ?
100
They produce skeletons that grow together that forms a structure called a coral reef.
What is a coral reef ?
100
Building materials and sculptures
What are the differentm uses of metamorphic rock ?
200
20 of the most common minerals that make up most of the rocks of the Earth's crust.
What is a rock forming mineral ?
200
A Igneous rock that is formed from lava that erupted onto the Earth's surface .
What is a extrusive rock ?
200
Clastic rock, Organic rock, Chemical rock.
What are the three major groups of sedimentary rocks ?
200
It will grow upwards with the sea.
If sea level rises above a coral reef what will happen with the reef ?
200
The mineral grains in the rocks are arranged randomly.
What is nonfoliated mean ?
300
The difference is that basalt is a dark colored rock that is low in silica content, but granite is a light color rock high in silica content.
What is is the difference between basalt and granite ?
300
An Igneous rock that is formed when magma hardened beneath Earth's surface .
What is a intrusive rock ?
300
Building materials, and tools.
What are the uses of sedimentary rocks ?
300
A croal animal are tiny relatives of jellyfish that live together in vast numbers.
What is a coral animal ?
300
By heat and pressure
How are metamorphic rocks formed ?
400
The three types are Igneous, Sedimentary, and Metamorphic .
What three major rock groups do geologists classify rocks into ?
400
A fine grained or glassy texture.
What kind of texture does a Igneous rock have ?
400
The process in which dissolved minerals crystalize and glue particles of sediment together.
What is cementation ?
400
When coral animals die, their skeletons remain which come together to form a coral skeleton.
How do coral reefs form ?
400
By the arrangement of the grains that amke up rocks.
How are metamorphic rocks classified ?
500
Texture is the look and feel of the rock's surface.
What does texture mean ?
500
Building materials and or tools.
What are the uses of a Igneous rock ?
500
Small solid pieces of material that come from rocks or living things.
What is a sediment ?
500
The conditions are about 40 meters of sunlight
What conditions of light and temperature do coral animals require ?
500
That the rocks have their grains arranged in parallel layers or bands
What does foliated mean ?
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