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