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Transcript Presentation

Wednesday, January 28, 2015
8:10 – 8:40
8:40 – 9:20
L for Land
The Lithosphere
The outer part of the earth, consisting
of the crust and upper mantle,
approximately 100 km (62 mi.) thick.
The Structure of the Earth and
Plate Tectonics
Structure of the Earth
• The Earth is made
up of 3 main
– Core
– Mantle
– Crust
Outer core
Inner core
The Crust
• This is where we live!
• The Earth’s crust is made
Continental Crust
Oceanic Crust
- thick (10-70km)
- buoyant (less dense
than oceanic crust)
- mostly old
- thin (~7 km)
- dense (sinks under
continental crust)
- young
How do we know what the
Earth is made of?
• Geophysical surveys: seismic, gravity, magnetics,
electrical, geodesy
– Acquisition: land, air, sea and satellite
– Geological surveys: fieldwork, boreholes, mines
What is Plate
• If you look at a map of the world, you may
notice that some of the continents could fit
together like pieces of a puzzle.
Plate Tectonics
The theory of plate tectonics was first proposed by
Alfred Wegener in 1910. Wegener noticed that the
shorelines of the continents seemed to ‘fit together’
like the pieces of a giant jig saw puzzle.
Wegener’s theory stated:
1) The continents were once all together in one
place forming a supercontinent, Pangea.
2) The continents broke apart and drifted to their
present locations.
Wegener’s theory was not taken seriously
because no one could believe that things as
large as continents could move and because
Wegener could not propose a mechanism
which could explain such motion.
• Current Day + or – 4mm
Hands On Activity!
• Behold the Supercontinent! Pangea
Copyright © 2010 Ryan P. Murphy
Vocabulary Activity – Imagine That!
Close your eyes and imagine:
After a sudden ice-age which freezes you at
your home in Florida for a million years, you
awaken and realize your home on the banks of
the Atlantic Ocean is no longer around any water.
Land appears to go on forever.
• What is the name for what that could explain it?
• Explain how it works.
What is the crust and
upper mantle called?
What is the scientific
theory that the Earth’s
crust is broken up in to
plates that move or float?
Plate Tectonics
What’s the hottest and
hardest layer at the center
of the Earth called?
inner core
Review Science Workbook
Chapter 8 pages 178-181
Homework Pages 195-200
9:20 – 9:30
Math Time!
9:30 – 10:45
Practice &
10:45 – 10:50
Language Arts/
10:50 – 12:00
Class Novel
RL1 – Quote accurately from a text when
drawing inferences
RL4 – word meaning/figurative language
RL5 – series of chapters provide overall structure
Class Novel
Paired Partners Read
Chapters 7 & 8
& Complete T chart
Chapter 7…
Paired Partner Reading
Finish Hugo assignment – complete T
chart, then independent reading
11:20 – 12:00
Out of Classroom!
• 12:00 – 12:45 Activity
• 12:45 – 1:15 Lunch
• 1:15 – 1:45 Recess
Writing Time!
Expository Nonfiction
W52 – write informative/explanatory texts
1:45 – 2:40
Reader’s Theater
Description Text Structure
In-Class Magazine Project
Today –
Write article
Rotation C!
2:40 – 3:10
3:10 – 3:15 Wrap Up!
• Pack-Up
• Office will announce:
Car Riders – Leave around 3:15
Bus Riders – Teacher walks out about 3:22
(listen to intercom-dismisses by grade)