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Reading Comprehension Worksheets
Rocks and Minerals
Bowen's Reaction Series

Rocks and Minerals
Rocks and Minerals


Bowen's Reaction Series
Print Bowen's Reaction Series Reading Comprehension with Sixth Grade Work

Print Bowen's Reaction Series Reading Comprehension


Reading Level
     edHelper's suggested reading level:   high interest, readability grades 6 to 8
     Flesch-Kincaid grade level:   6.94

Vocabulary
     challenging words:    amphibole, biolite, discontinuous, felsic, gabbro, mafic, muscovite, olivine, orthoclase, plagioclase, pyroxene, sodium-rich, igneous, basalt, further, merge
     content words:    Geologist Norman Bowen, Norman Bowen


Bowen's Reaction Series
By Patti Hutchison
  

1     Igneous means made from fire. Igneous rocks form when magma cools. As it cools, minerals "drop out" and form crystals. These minerals can be either mafic or felsic.
 
2     Mafic minerals are dark in color. They are produced at high temperatures. Mafic minerals include olivine and pyroxene. Basalt and gabbro are common mafic rocks.
 
3     Felsic minerals are light-colored. They include quartz and mica. The most common felsic rock is granite.
 
4     How do all these different minerals and rocks form from the same magma? Geologist Norman Bowen came up with a solution to this puzzle. It is called Bowen's reaction series.
 
5     Bowen's reaction series describes how minerals form as magma cools. The temperature of the magma and the rate at which it cools have an effect on the minerals that form. Bowen's reaction series shows how eight common minerals form from the same magma.

Paragraphs 6 to 13:
For the complete story with questions: click here for printable



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Rocks and Minerals
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