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Minerals and Rocks

Chapter 2 Interactive Science 6th Grade

QuestionAnswer
Igneous rocks are classified by their ____________ (where it is formed) origin
Igneous rocks are classified by their ____________ (Size and shape of mineral crystals in the rock) Texture
Igneous rocks are classified by their ____________ (minerals are combined to make up a certain rock sample) Mineral Composition
Two types of Igneous Rock are _____________________ and ________________ Intrusive and Extrusive
________________ igneous rocks form when magma enters a pocket or chamber below the earths surface Intrusive
________________ igneous rocks form when magma makes its way to the earths surface Extrusive
When magma makes its way to the earths surface the molten rock erupts or flows above the surface as _________ then cools forming rock lava
Intrusive Plutonic rocks have ________________________. large well formed crystals
Extrusive rocks form when lava erupted to the earths surface have _________________. small crystal
Obsidian, basalt, pumice, scoria and volcanic glass are all __________________ types of rocks Igneous
An Igneous rock is made as magma ___________. cools
gasses in the lava that creates the igneous rock scoria and pumice cool so quickly they have fine holes called ___________. vesicles
Volcanic glass cools so _______________ that few or no mineral grains or crystals are formed Quickly
Most atoms in volcanic glass are not arranged in ___________ patterns and few crystals are present orderly
Basalt is low in silica and has ____________ colors dark
Granite is high in silica as the magma cools it is ________ in colors light
Created by: KB285
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