Monday, 10/29 Chp.5 Test INB Check Materials Check New INB set-up.
Thurs. 11/15 and Fri. 11/16 Test-Ch. 5 Minerals of the Earth’s Crust today. INB check #1 today.
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Transcript of 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
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?
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.
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.
• 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
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
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
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
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?
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)
• 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.
• Compaction=The heavy sediments press down on the layers beneath causing the sediments to fuse together.
What turns sediments into solid rock?
• 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.
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.
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.
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
In: Pg.37
On the next slide are 4 metamorphic rocks. Tell me if they are foliated or unfoliated.1.2.3.4.