Transcript Inside the Earth

Essential Question: SPI 7.7.5 and SPI 7.7.6
Why did Alfred Wegener propose the Theory of Continental Drift?
Activating Strategy:
Use the magnetic continent/Pangaea board to excite discussion and prior
knowledge or use the idea in the teacher edition on page 301 creating puzzles
from magazine pictures and have students explain how they know how to
reconstruct their neighbor’s puzzle.
Teaching Strategies:
Create vocabulary chart.
Pangaea cut and paste puzzle. Put in spiral. Need glue and colored pencils.
Read text 300-303 for details leading to the Theory of Continental Drift.
Complete Graphic Organizer.
Use text page 307 to complete the “Seafloor Spreading Rates” lab for extension
activity or bonus.
Summarizing Strategy:
Use your GO to construct support to answer the EQ.
Homework:
WB pg 95 and 96 or “Continental Drift” WS.
Daily Work
1. The Moho Discontinuity separates which two
layers of the Earth?
2. Which layer of Earth is the thinnest?
3. The inner core is made from solid ______
which might create our gravitational field.
4. According to your vocabulary, which layer of
the earth do the plates slide around on?
5. What are the two types of crust found in the
lithosphere?
Vocabulary
Term
Pangaea
Continental
Drift
plate
tectonics
glacial
striations
Hint
Definition
Vocabulary
Term
Pangaea
Continental
Drift
plate
tectonics
glacial
striations
Hint
Definition
Theorized, large, ancient landmass that
was composed of all the continents joined
together
Vocabulary
Term
Hint
Definition
Pangaea
Theorized, large, ancient landmass that
was composed of all the continents joined
together
Continental
Drift
Alfred Wegener’s hypothesis that all
continents were once connected in a
single large landmass that broke apart
about 200 million years ago and drifted
slowly to their current positions
plate
tectonics
glacial
striations
Vocabulary
Term
Pangaea
Hint
Definition
Theorized, large, ancient landmass that
was composed of all the continents joined
together
Continental
Drift
Alfred Wegener’s hypothesis that all
continents were once connected in a
single large landmass that broke apart
about 200 million years ago and drifted
slowly to their current positions
plate
tectonics
Theory that Earth’s crust and upper
mantle called the lithosphere is broken
into plates that float and move around on
a plasticlike layer of the mantle called the
asthenosphere
glacial
striations
Vocabulary
Term
Pangaea
Hint
Definition
Theorized, large, ancient landmass that
was composed of all the continents joined
together
Continental
Drift
Alfred Wegener’s hypothesis that all
continents were once connected in a
single large landmass that broke apart
about 200 million years ago and drifted
slowly to their current positions
plate
tectonics
Theory that Earth’s crust and upper
mantle called the lithosphere is broken
into plates that float and move around on
a plasticlike layer of the mantle called the
asthenosphere
glacial
striations
scratches cut into rock by the movement
of glaciers downhill
Why did Alfred Wegener propose the Theory of Continental Drift?
7.7.5 and 7.7.3
Why did Alfred Wegener propose the Theory of Continental Drift?
Continents fit
together like
a puzzle.
Matching fossils
found on continental
coasts oceans apart.
Clues of major climate
Changes across the globe.
Ex. Matching
glacial striations
Similar rock structures
found where continents
would have been
connected.
7.7.5 and 7.7.3
Pangaea
Lab: Seafloor Spreading Rate
Bonus opportunity!
Peak
Distance west normal polarity
Distance east normal polarity
Average distance
Age from scale (millions of
years)
Rate of movement (cm/yr)
1
2
3
4
5
6
Summarize
Use your Graphic Organizer
and map of Pangaea to
construct support to answer
the “Essential Question”.
Why did Alfred Wegener propose the Theory of Continental Drift?
Timetracker
Science:
Read pages 300-306. Do WB
pgs 95 and 96
Vocabulary
Term
Pangaea
Hint
Definition
Theorized, large, ancient __________
that was composed of all the
___________ joined ____________
Continental
Drift
Alfred ________’s hypothesis that all
__________ were once _________ in a
single large landmass that broke apart
about 200 million years ago and
_______slowly to their current positions
plate
tectonics
Theory that Earth’s crust and upper
mantle called the ________ is broken into
plates that _____ and move around on a
plasticlike layer of the mantle called the
_____________
glacial
striations
________ cut into rock by the movement
of ____________ downhill