Download Chapter 3 Section 3 Notes How are igneous rocks classified? Name

Chapter 3 Section 3 Notes How are igneous rocks classified? Name: _____________________________________________ Date: September 29, 2015 Objective: _______________ and _______________ igneous rocks by their _______________ and _______________. Key Term: Texture: ​
____________________________________________________________________ ____________________________________________________________________________ A Combination of Minerals _______________ rocks are _______________ up of many _______________ kinds of _______________. However, there are only _______________ minerals that are _______________ _______________ in igneous rocks. MINERALS IN IGNEOUS ROCKS Quartz Feldspar Mica Olivine Amphibole Pyroxene Often, _______________ rocks can be _______________ by their _______________. _______________ is an igneous rock _______________ up of the _______________ known as _______________ , feldspar, and _______________. Crystal Size Igneous _______________ have mineral _______________ of varying _______________. Crystal size _______________ on the _______________ of _______________ it takes the _______________ rock to _______________. The _______________ crystals _______________ when the rock _______________ very _______________. Igneous rocks formed from _______________ have _______________ mineral _______________. _______________ crystals take _______________ time to _______________. Most igneous rocks _______________ from _______________ have very _______________ crystals. Sometimes lava _______________ so _______________ that there is _______________ time for _______________ to form. For this _______________, a _______________ igneous rocks do _______________ have any _______________. Obsidian is an _______________ of an igneous rock that does _______________ have any _______________. 1. INFER: ​
How are cooling rate and crystal size related? ____________________________________________________________________________
____________________________________________________________________________ Texture _______________ can be used to _______________ different igneous _______________ that are _______________ up of the _______________ minerals. For example, you can _______________ if a rock is _______________ or rhyolite by _______________ at its _______________. Granite has _______________ crystals that you can _______________ and _______________. Rhyolite has very _______________ crystals that are _______________ to _______________. Basalt is another _______________ found rock with _______________ crystals. Igneous rocks are _______________ according to their _______________. Igneous rocks with _______________ crystals have a _______________ texture. Igneous rocks with _______________ crystals have a _______________ texture. Igneous rocks that do _______________ have _______________ have a _______________ texture.