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Chapter 10, Section 2
Standards 3b. Students know the principal structures that form at the 3 different kinds of plate boundaries.
Objective 1 Identify how movements of tectonic plates change Earth’s surface.
Objective 2 Describe the supercontinent cycle.
Assessment Flap Book, Daily Quiz, Chapter Test
Review Daily Bellwork, Science Starters, Standards Practice
Chapter 10, Section 3
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Key TermsCreate a flashcard for each of the following terms (found on p.255 in your text book).RiftingTerraneSupercontinent cyclePangaeaPanthalassa
If you finish early, study your flashcards!
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Rifting
• The process by which Earth’s crust breaks apart.• New, smaller continents may
form as a result.
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Terranes• A TERRANE is a piece of lithosphere that has
a unique geological history. –Contains rocks and fossils that differ from
nearby terranes.–Major faults at the boundary of a terrane.–Magnetic properties of a terrane do no
match nearby terranes.
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Terranes• When a Terrane on a subducting plate
converges with a plate of continental crust the terrane is scraped off the subducting plate and is added to the continental plate.
• Some terranes form mountains, some just add more surface area.
• This process is called ACCRETION.
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The Supercontinent Cycle• SUPERCONTINENT= when all of the landmasses form one
large continent (scientists believe there have been at least 5 different supercontinents since the first crust formed on Earth).
• SUPERCONTINENT CYCLE = the process by which supercontinents form and break apart over time.
• PANGAEA= the supercontinent that formed 300 million years ago and began breaking up 250 million years ago which led to our modern continents.
• PANTHALASSA= the single, large ocean that covered the Earth’s surface during the time of PANGAEA.
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Quick Check!!1. What is a supercontinent?
________________________________________________________________________
2. ___________ was the most recent supercontinent.
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Geography of the Future
• As tectonic plates continue to move Earth’s geography will change dramatically.
• East Africa will rift and separate from Africa, North and South America will collide with Africa, Los Angeles will be North of San Francisco!
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Assessment
Drawing of one of the stages of the formation of Pangaea on p. 258-259.
Include color and labels.
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Daily Quiz