Igneous Rocks Igneous Rocks Rocks & Minerals Notes: Page 7 Rocks & Minerals Notes: Page 7
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Igneous RocksIgneous RocksRocks & Minerals Notes: Page 7Rocks & Minerals Notes: Page 7
How are igneous rocks formed?
Name two places where igneous Name two places where igneous rocks formrocks form
What determines crystal size?
What’s the difference between extrusive and intrusive igneous
rocks?
form on or near thesurface (small
crystals)
form below the
surface(large
crystals)
Characteristics used to classify igneous rocks
Characteristics used to classify igneous rocks
Characteristics used to classify igneous rocks
Characteristics used to classify igneous rocks
Characteristics used to classify igneous rocks
Characteristics used to classify igneous rocks
contains Fe and Mg
contains Al
Key Identifying Features of Igneous Rocks
usually black in color
the grains have been meltedand are now physically connected
Please Answer the Questions on Page Please Answer the Questions on Page 88
Using Your Earth Science Reference Using Your Earth Science Reference Tables.Tables.
The Answers (Page The Answers (Page 8):8):1. Basaltic 1. Basaltic GlassGlass2. Granite2. Granite3. Basalt3. Basalt
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