Unit 6:
Igneous Rocks &
Volcanoes
Name:
Block:
Teacher:
Earth Science
Table of contents
Page
#
1
Page Title/Assignment
Daily Warm Ups
2
Vocabulary Illustrations & Examples
3
Igneous Rock vocab
4
Rock Cycle Poster
5
Rock Cycle Info
6
Texture labeling
Compare & Contrast: Venn diagram
7
Igneous Rock Notes
8
Landform Labeling
9
Intrusive Igneous Rock Structures
10
What type of Volcano am I?
11
Volcano Notes
Daily Warm Ups
Warm
Up #
Date
1
2
3
4
5
6
7
Question(s)
Answer(s)
Illustrations & Examples
Directions: For each vocabulary word, draw a picture or list
some examples. Pictures can be inspired by the definition of the
word. Examples can include things in general that make you think
of the word, or you may look some examples up on the internet.
Vocabulary
1. rock:
2. rock cycle:
3. igneous rock:
4. lava:
5. magma:
6. felsic:
7. mafic:
8. pluton:
9. batholith:
10.
laccolith:
11.
dike:
12.
sill:
13.
intrusion:
Rock cycle poster/drawing
Directions handed out in class and posted on website.
Rock Cycle Questions
Read pp. 118-120 in your textbook. Answer the questions below. These are
your notes!
1. What is a rock? How are they alike and different from minerals?
2. (True/False) All of the different types of rock can become any other
type of rock.
3. Is the rock cycle one single pathway or a complex web of alternate
pathways? Defend your answer.
4. Fill out the follow chart about the 3 different types of rocks:
This type of
rock…
Igneous Rocks
…comes from this
type of material…
…and are formed by these
processes
Sedimentary
Rocks
Metamorphic
Rocks
APPLICATION: How do you think plate tectonics affect the Rock Cycle and
its processes? (You can use your Plate Tectonics INB!!!)
Igneous rock texture
Name the type of igneous rock texture that each picture represents.
A.
B.
C.
Compare & contrast
Fill out the Venn diagram to compare and contrast intrusive and extrusive
igneous rock textures.
Extrusive
Intrusive
Igneous rock notes

Igneous rocks are formed by the
molten rock (
or
CLASSIFICATION:
1.
2. Texture of
of
).
Composition
MINERAL COMPOSITION:
 Felsic:
amounts of silica &
 Mafic:
amounts of silica &

Amount of silica determines composition:
more than 65% silica content
50-65% silica content
less than 40-50% silica
TEXTURE OF GRAIN SIZE:
 depends on
 Where it forms, will change the
1. ABOVE GROUND:
 from
 called
or
rocks
 cool
and crystals have a limited time to
form; as a result there are
or

Resulting textures:
1.
2.
3.
2. BELOW GROUND:
 from
 called
 cool
so
time to form
 Resulting texture:
1.
or
rocks
mineral crystals have
Intrusive igneous rock structures




DIKE
 Sheet-like Igneous rocks that
structure of pre-existing rock
the
SILL
 Sheet-like Igneous rock that
layering of pre-existing rock
to the
LACCOLITH

developed sills
BATHOLITH
 large
mass of Igneous Rock, which
usually makes up the core of
mountains
Volcano notes

: Area surrounding the pacific plate
where the most volcanoes & earthquakes occur
VOLCANIC ACTIVITY:

: recent eruptions, active magma source

: no recent eruptions, but still has an
active source of magma

: no recent eruptions, no source of
magma
VISCOSITY:
 the
of lava to flow (honey vs. water)
 more viscous, the
the material
 depends on the amount of
 type of
being melted determines the amount of
3 TYPES OF VOLCANIC CONES:
1.
: explosive eruptions, small but steep
slopes, pyroclastics
2.
: non-explosive eruptions, fluid basaltic
lava, gentle broad slopes
3.
: alternating between lava
and pyroclastics, explosive and non-explosive
eruptions, very steep/tall
VOLCANISM @ DIFFERENT PLATE BOUNDARIES
Intrusive structures
Using your notes on p. 9, label the four
pictures
below.
What type of volcano am I?
1. Description: Mayan Volcano
2. Description: Kilauea Volcano
Thick clouds of ash blanketed
villages at the foot of this
volcano. A series of powerful
eruptions sent residents fleeing and
cut power to thousands of villages.
In each explosion, the volcano
belched red hot rocks and a column
of ash as high as 7.5 miles. Lava
raced down the slope at 50 mph.
Lava was welling up vigorously on
the western side of this lake,
moving west to east across the lake
and pouring into a 30x30 meter
incandescent hole. The constantly
churning lake surface was almost
entirely incandescent. Lava consumed
the 700 year old Waialua Heian
temple. Lava poured over the 4 foot
high walls and continued on into the
ocean. In both 1989 and 1990, lava
crept near the temple but was
diverted around it.
Type:
Type:
Evidence:
Evidence:
3. Description:
Mt. Etna Volcano
4. Description: Paricutin Volcano
On 2/14, this volcano erupted and
shot ash and rock through its
southeast crater. Lava flowed down
the uninhabited flank of the
volcano. Ash was found 15 miles from
the volcano. Two coastal communities
located on Mt. Etna’s slopes were
covered in ash. On 10/25 glowing
rocks were shot into the air.
Volcanologists expect a lava flow
will eventually work its way through
a fissure in the central crater and
move down its western slope.
Paricutin is the famous “volcano
that grew out of a cornfield”. It
was not really a very dangerous
eruption for people, but it was
quite destructive of their
agricultural lands, livestock, and a
way of life. The eruption lasted
from 1943 until 1952, produced a
large cinder and ash cone, and
covered an area about 8 km by 8 km
with slow-moving lava flows.
Type:
Type:
Evidence:
Evidence: