Rock Book
7th Grade Science
Objectives:
-Identify key vocabulary relating
to the rock cycle.
-Identify rocks as igneous,
metamorphic and sedimentary.
-Identify the process responsible
for forming rock types
Foldable (use 3 sheets of construction paper)
Table of contents: (on inside cover)
Sedimentary Rocks-page 1
Sedimentary Rock Lab-page 2
Metamorphic Rocks-page 3
Metamorphic Rock Lab-page 4
Igneous Rocks-page 5
Igneous Rock Lab-page 6
What are rocks? (write this on the front cover)
Rocks are naturally occurring, solid mixtures
composed of minerals, smaller rock fragments,
organic matter or other grains. They are grouped
by how they form.
Watch Brain POP-Rock types
Sedimentary Rock, pg. 1
 Formed when sediment is pressed together by forces on or within the
Earth to form rock
3 Types:
 detrital-grains of minerals or other rocks deposited
in layers by water, ice, gravity or wind
 chemical-water loaded with minerals evaporates leaving
behind the hardened minerals
 organic-material from once living things is pressed
together to form rock
Sedimentary Rock Lab, pg. 2
 Conglomerate-detrital
 Sandstone-detrital
 Shale-detrital
 Siltstone-detrital
 Chert-siliceous/organic
 Arkose-detrital
 Limestone-carbonate
 Rock salt-chemical
 Rock Gypsum-chemical
 Travertine-chemical
 Oolitic Hematite-ironstone
 Coquina-organic
 Bitumous coal-organic
 Lignite-organic
 Clay-detrital
DO: Divide your rocks into 4 groups based on
their rock type:
Detrital
Organic
Chemical
Other
Write a description of each group of
sedimentary rock-what features/characteristics
do each group have? Give 2 examples (rock
names) of each group
Metamorphic Rock, pg. 3
Metamorphic rock forms when existing rock is
squeezed or
heated (not melted)-usually old rock
2 types:
Foliated-rocks have visible layers
Non Foliated-no visible layers or banding
Examples
Metamorphic Rock Lab, pg. 4
Do: Divide your rock samples into 2
groups: foliated and nonfoliated.
Metamorphic Rock Lab, pg. 4
Use the list to correct your groups:
Foliated
Nonfoliated
3) Augen gneiss
4) Biotite gneiss
1) Amphibolite
2) 2) Hornfels
6) Mica Schist
5) Garnet wollastonite skarn
13) Phyllite
14) Red slate
15) Grey slate
9) Marble
10) Quartzite
11) Serpentinite
12) Soapstone
Metamorphic Rock Lab, pg. 4
Draw a picture to show and give 2 examples of each type of metamorphic rock:
Foliated
2 examples:
Nonfoliated
2 examples:
Igneous Rock, pg. 5
Form from cooling of magma (inside the Earth) or
lava (on the Earth’s surface)
2 Types:
-Intrusive
-Extrusive
Draw a T-Chart with Intrusive and Extrusive as
headings
Igneous Rock, pg. 5
Intrusive Igneous Rock:
-forms inside the earth
-longer time required to cool because of hotter temperature-larger crystals
-forms from magma
Igneous Rock, pg. 5
 Extrusive Igneous Rock
-forms from lava on Earth’s surface
-cooler temperature-faster cooling of rock-smaller crystals-can be glassy
Igneous Rock Lab, pg. 6
Divide your samples in to 2
groups: Intrusive and Extrusive
-how can you tell the difference?
Igneous Rock Lab, pg. 6
check your groups:
Intrusive
Extrusive
Diorite
Gabbro
Andesite
Basalt
Graphic Granite
Granite
Rhyolite
Scoria
Peridotite
Monzonite
Pumice
Tuff
Porphyry
Obsidian
Feldspar Porphyry
Igneous Rock Lab, pg. 6
After regrouping your igneous rocks,
Draw a picture to show the larger, coarse grains of an
intrusive rock and the smaller grains of an extrusive rock
(draw two pictures to show the texture)
List 2 examples of Intrusive Igneous Rock
List 2 examples of Extrusive Igneous Rock
Review:
On your index card, write down the groups for each
rock type:
Sedimentary: Name the 3 groups
Metamorphic: Name the 2 groups:
Igneous: Name the 2 groups:
Rock Cycle, pg. 7
The Rock Cycle is a model that describes
how different kinds of rock are related to
each other and change from one type to
another type.
Rock Cycle, pg. 7
 Processes in the Rock Cycle
-compaction-pressing together of sediment by Earth forces
-cementation-sticking together of sediment
-weathering-breaking down of rocks
-erosion-moving of sediment
-heat from the Earth
-pressure from the Earth
-melting from a solid to liquid magma or lava
Watch the Brain POP video and listen for these terms
Rock Cycle,
pg. 7
Draw a
picture to
show the rock
cycle
Which type of Rock?
Which type of Rock?
Which type of Rock?
Complete your rock book
By adding some rock pictures to it (at
least 3)
Can be photos printed or drawings
Label each rock picture with the name
of the rock and type of rock
(Sedimentary, Metamorphic, Igneous)
Make sure that you have all your notes
and labs