Post on 27-Dec-2015
Chunky Iggy Rocks
All igneous rocks are formed from liquid rock
known as __________?
OMagma
The process of hardening rock is
known as __________?
OSolidification
Magma that extrudes above Earth’s surface is called __________?
OLava
Igneous rocks that cool on Earth’s surface are
called __________?
OExtrusive
Extrusive igneous rocks have a fine grained or
glassy __________?
OTexture
Igneous rocks that cool below Earth’s surface are called __________?
OIntrusive
Igneous rocks that are light in color, lower in density and rich in Al and Si are said to
have a __________ composition.
OFelsic
Intrusive igneous rocks have a ______ grained
texture.
OCoarse
Igneous rocks with gas pockets are said to have
a __________ texture.
OVesicular
Igneous rocks that are dark in color, high in density and rich in Fe and Mg are said to have
a __________ composition.
OMafic
The slower magma cools, the ________ the
crystals.
OLarger
Another word for Extrusive is
_____________ .
OVolcanic
An igneous rock with a glassy texture would mean that the rock
cooled __________ Earth’s surface.
OAbove
An igneous rock with a vesicular texture would
mean that the rock cooled __________ Earth’s
surface.
OAbove
Another word for intrusive is _________________ .
OPlutonic
This igneous rock is felsic with a coarse texture.
OGranite
Do intrusive igneous rocks ever have a vesicular texture?
ONo
What is the percentage of Biotite in Peridotite?
O Zero
This is the only Felsic igneous rock that is black.
O Obsidian
Olivine is found only in (Felsic, Mafic) igneous rocks.
O Mafic
Place the numbers of these igneous rocks in descending
crystal size.1)Diorite, 2)Pegmatite, 3)Basalt
O 2, 1, 3
The Earth’s oceanic crust is made up of this igneous rock.
O Basalt
What is the origin and rate of formation?
O Extrusive, fast