Thurs. 11/15 and Fri. 11/16

• Test-Ch. 5 Minerals of the Earth’s Crust today.• INB check #1 today.

Why is the mineral below considered a crystal?

a. Because it has 4 sidesb. Because it can be brokenc. Because it has a regular, repeating patternd. Because it has luster

Pg. 25 Title Page

Chapter 6 • Title(Write out the chapter number and word

title).• 3 picts. and 3 keywords• 3 colors

Mon. 11/19 and Tues. 11/20

A. Tombstone A contains minerals less resistant to weathering than Tombstone B.

B. Tombstone A has undergone a longer period of weathering than Tombstone B.

C. Tombstone A has experienced cooler temperatures than Tombstone B.

D. Tombstone A was exposed to less acid rain than Tombstone B.

Two tombstones, located in the same cemetery approximately 10 meters apart, face east. Tombstone A had dates cut into the rock in 1922. Tombstone B had dates cut into the rock in 1892.Which statement best explains why the dates are more difficult to read on Tombstone A than on Tombstone B?

In: Pg. 25

What is the title of section 6.1 in the book?

Thru 1: Pg. 26

6.1 Rocks and the Rock Cycle SQ3R• Read pages 125-128 of the text book and

complete the SQ3R sheet for these pages.

Thru 2

Pg. 27Analysis Questions:1. Which processes turn

rock into:– Sediments– Magma– Metamorphic rock

2. What turns magma into igneous rock?

3. What turns sediments into sedimentary rock?

Pg. 28Rock Cycle Cutout Activity.• Cutout the arrows and

pictures from the “Cutout Sheet”.

• Glue them in the appropriate place on the “Rock Cycle” Diagram.

Add to Table of Contents

• The Rock cycle Page 32• Rock notes Page 33

What is a Rock?• Rocks = Naturally-occurring mixtures of minerals, mineraloids, glass or organic matter.

• What is the difference between a rock and a mineral?–Rocks are made up of ONE or MORE minerals.–A rock can have once-living material in it.

Once a rock is formed, does it stay the same rock forever?

• NO!

• Rocks are continually changed by many processes, such as weathering, erosion, compaction, cementation, melting, and cooling.

• Rocks can change to and from the three types:

1. Igneous 2. Sedimentary 3. Metamorphic

What is the process through which rocks change?

• The Rock Cycle—the process through which earth materials change back and forth among the different types of rocks.

IGNEOUS

SEDIMENTARY

Weathering, Erosion, Compaction, Cementation

Heat and Pressure

Heat and Pressure

Melting, Solidification Melting,

Solidification

OutDraw on page 32

METAMORPHIC

Weathering, Erosion,

Compaction, Cementation

•Assignment: Construct a Rock cycle

Weathering, Erosion, Compaction, Cementation

Heat and Pressure

Weathering, Erosion, Compaction, Cementation

Heat and Pressure

Melting, Solidification Melting,

Solidification

OutFill in the blanks with:Igneous rockSedimentary rockMetamorphic rock

Wed. 11/21 and Mon 11/26

• Quiz #3

Quiz #31. What is the title of chapter 6? Pg 252. What page is the SQ3R for section 6.1 taped

on?3. What are the 3 types of rocks? Pg 274. What process turns rock into sediments? Pg

275. What type of rock forms from magma? Pg 276. What type of rock forms from heat and

pressure? Pg 27

1. What is a rock?2. What is the difference between a rock and a

mineral?

IGNEOUS

SEDIMENTARY METAMORPHIC

Weathering, Erosion, Compaction, Cementation

Heat and Pressure

Weathering, Erosion, Compaction, Cementation

Heat and Pressure

Melting, Solidification Melting,

Solidification

Fill in the blanks with:Igneous rockSedimentary rockMetamorphic rock

Metamorphic rock forms when the structure of pre-existing rock is changed. What processes can change rock in this manner?

a. Extruding and Coolingb. Compaction & Cementationc. Weathering & Erosiond. Heat & Pressure

• Video on Minerals and Rocks

Add to table of contents

• Tunka-Shila Questions Pg. 34• Rock types Pg. 35

Tunka-Shila, Grandfather Rock1. What process in the rock cycle does Paragraph A

describe?2. What type of rock is being formed?3. What process in the rock cycle does Paragraph B

describe?Paragraph B?4. What type of rock is being formed?5. What are your feelings about this story? Did it help

you learn about rocks? Did it help you to understand how other cultures view the formation of our planet?

Thru 2

Pg. 31Uses of Pumice worksheet—do both sides!• Homework!

Pg. 32Cornell Notes-Ch. 6 Rocks

Ch. 6 Rocks

Thru 2Chapter 6 RocksCornell Notes-Pg. 32

What are the types of rocks?

• Rocks are divided into 3 groups based on how they were formed:

• IGNEOUS•SEDIMENTARY•METAMORPHIC

• “Ignis” = Latin for “fire”• Formed from the cooling of

either magma or lava • The most abundant type of

rock• Classified according to

their origin and composition

ORIGIN— Where rocks are formed

• Below ground = from magma (intrusive igneous rock)

• Usually have LARGE crystal grains (they cooled slowly)

• Above ground = from lava (extrusive igneous rock)

• Usually have SMALL or NO crystals (they cooled too quickly)

Some have large & small crystals (called porphyritic)

Peridotite: Intrusive or Extrusive? Why?

Granite: Intrusive or Extrusive? Why?

Porphyry: Intrusive or Extrusive? Why?

Obsidian: Intrusive or Extrusive? Why?

COMPOSITION— What kind of substances the rocks are made of.

Basalt(a mafic rock that is rich in iron and magnesium)

Granite (a felsic rock that is rich in silica)

Diorite (an intermediate rock that has mafic and felsic rocks in it)

• Formed from sediments that are pressed or cemented together.

• Sedimentary rocks represent 7% of the Earth’s crust, but they cover 70% of the Earth’s surface.

Sediments

• Rock fragments, mineral grains, animal & plant remains.

• Water or wind breaks down rock.

• These sediments are moved by wind, water, ice or gravity.

• Then they are deposited (dropped)

• Compaction=The heavy sediments press down on the layers beneath causing the sediments to fuse together.

What turns sediments into solid rock?

• Cementation=Dissolved minerals flow between the particles and cement them together.

• Rocks that have changed due to intense temperature and pressure

• “Meta” means “change” and morphosis means “form” in Greek

• Igneous, sedimentary and other metamorphic rocks can change to become metamorphic rocks

What occurs in the Earth to change these rocks?

• Pressure from overlying rock layers• High heat, but not enough to melt the rock• Rocks may be flattened or bent or atoms

may be exchanged to form new minerals.

• *You can think of metamorphic rocks as a squished peanut butter & jelly sandwich in your lunch.

How are metamorphic rocks classified?

• Foliated—mineral grains are flattened and line up in parallel bands

– Example: gneiss formed from rearrangement of minerals in granite into bands

How are metamorphic rocks classified?

• Non-Foliated—No bands are formed

– Example: marble formed from limestone

Where do metamorphic rocks usually form?

• Where magma intrudes relatively cool rock

• Near colliding plates (near mountain ranges)

• Places that are covered miles thick with other rock causing pressure

• When hot water intrudes rock• Where a meteorite strikes

Earth (rare)• Where lightning bolts strike

rocks (rare)

OutThis is an obsidian, an igneous rock.1. Is this an

extrusive or intrusive igneous rock?

2. Explain.

Tues. 11/27 and Wed. 11/28

• sub

A sample of basalt has smaller crystals than a sample of granite. What is the most likely reason for this? The basalt

a. forms when magma cools slowly.b. forms when magma cools quickly.c. contains lighter elements than granite.d. contains heavier elements than granite.

In: Pg. 33

• What are 3 uses that humans have for rocks?

Thru 1: Pg. 34

Movie clip: Rocks(17 minutes)-watch the movie clip and write down 5 facts.1.2.3.4.5.

Thru 2

Pg. 353 column vocab.1. Intrusive igneous rock2. Extrusive igneous

rock3. Felsic4. Mafic5. Compaction6. Cementation7. Chemical

sedimentary rock

Pg. 368. Organic sedimentary

rock9. Clastic sedimentary rock10. Metamorphism11. Contact metamorphism12. Regional metamorphism13. Foliation14. Nonfoliated

Out

Coal was formed when the remains of ancient plants were buried and compacted before they could decay.Coal is a _______ sedimentary rock because it…

Thurs. 11/29 and Fri. 11/30

• Quiz #4 today—get out paper and your INB.• Test-Ch. 6 Rocks next class.• INB Check #2 next class.

Quiz #41. A rock is made of one or more_______. Pg 292. Is obsidian and intrusive or extrusive igneous rock? Pg 293. What is the answer to #2? Pg 304. What does “ignis” mean? Pg 325. Where a rock is formed is called its _____. Pg 326. _______ igneous rocks cool above the earth’s surface. Pg 327. Rock fragments, mineral grains and plant and animal remains are called______.

Pg 328. ______ is when dissolved minerals flow between particles and cement them

together to form sedimentary rock. Pg 329. ______ rocks are rocks that have change due to intense heat and pressure. Pg

3210. In a ______ metamorphic rock, mineral grains are flattened and line up in

parallel bands.

• Which two classes of rock will form near or at Earth’s surface?a. Extrusive igneous and sedimentaryb. Sedimentary and intrusive igneousc. Metamorphic and igneousd. Metamorphic and sedimentary

Rock Identification Characteristics

Fine Grain• Smooth appearance• In igneous and

metamorphic rock=no or very small crystals

• Sedimentary rock=small particles

Coarse Grain• Rough or grainy

appearance• In igneous and

metamorphic rock=larger crystals

• Sedimentary rock=larger particles

Course grained sedimentary rock

Coarse grained igneous rock

Coarse grained metamorphic rock

Fine grained sedimentary rock

Fine grained igneous rock

Fine grained metamorphic rock

Metamorphic RockFoliated-minerals arranged in bands.

Unfoliated-minerals not banded.

In: Pg.37

On the next slide are 4 metamorphic rocks. Tell me if they are foliated or unfoliated.1.2.3.4.

1

2 4

3

Thru 1: Pg. 38

• Rock Identification Lab.

Out

The 3 types of rock are igneous, sedimentary and metamorphic.1. What type of

rock is this?2. How do you

know?