Download Introduction to Canada`s Geologic

Canada’s Geologic
History
Exploring Earth’s Structure and Surface
CGC1D1
THINK-­‐PAIR-­‐SHARE Have you ever wondered? •  What it would be like to journey to the center of the Earth? •  What do you think it would be like? Journey to the Centre of the Earth Journey to the Centre of the Earth Earth is composed of:
MANTLE
CRUST
CORE
Earth’s Composition –
Act It Out!
•  In your group, create a short skit that will
illustrate the characteristics of your part of
the earth’s interior
•  Now let’s compare our skits to the real
characteristics and definitions of the
earth’s interior.
THERE ARE FOUR MAIN LAYERS THAT
MAKE UP THE EARTH:
1.The Inner Core is…
•  Mass of iron, about 3500C
•  Solid due to immense pressure
2. The Outer Core is…
•  Mass of molten iron and nickel,
surrounding inner core, 5000C
•  The entire core is about 3500km thick
3. The Mantle is…
•  A rock layer about 2900km thick,
surrounding the outer core
•  Outer layer is known as the
asthenosphere, slow moving molten
rock
•  Where convection currents get energy
to move plates
Earth has a radius of about
6500km from inner core to
the surface
Earth’s Structure cont’d
4. The Crust is…
•  A layer of rock between
35-75 km in depth
•  Made of oceanic and
continental crust
•  Outer mantle and crust
together are called the
lithosphere
THE EARTH AS AN EGG
•  Compare the earth’s layers to an egg
•  The shell is much like the thin crust called
the lithosphere
•  The white of the egg is like the mantle – a
layer of molten rock
•  The yolk is the core of the Earth
Your Turn
•  Think of another object that could be
compared to the earth’s composition
•  A chocolate cherry bomb candy
•  A peach
Systems/Spheres on Earth
Recall!
What are the four main spheres on Earth?
1. Atmosphere
2. Lithosphere
3. Hydrosphere
4. Biosphere
Individual Exploration –
Point-Form Note Taking
•  Use page 51 in Encounter Canada to
complete your chart
•  You must read the information and identify
the MOST important information to record
on your chart
•  HINT: You should include 1 point/box and
each sphere has about 7-8 points
Spheres – Mix and Match
•  Place the card you have been given in the
correct location on the whiteboard
•  Compare your notes to the board and
make any necessary changes
Check-In
•  Add new terms from today’s lesson to
your glossary
•  Class Shout-Out:
Tell me 1 new thing you learned today
1 question you still have
Geologic Time
•  Geologists have divided
the earth’s history into 4
periods called eras. Each
era represents a time of
major sediment
deposition and earth
movement
•  Why do you think we
divide the earth’s history
into eras?
Geologic Eras
• 
• 
• 
• 
Precambrian
Paleozoic
Mesozoic
Cenozoic
Acronyms
• P
• P
• M
• C
Geologic Time –
Decode the Puzzle
•  In your group, arrange the puzzle pieces
into the correct order to create an accurate
timeline based on what you currently know
•  Now, compare your timeline to that on the
handout provided by your teacher. How
did you do?
Your Task
•  Read pp.118-119 and define the following terms in your
notebook. Use them in a sentence to demonstrate your
understanding:
- Geologic Time
- Erosion
- Eras
•  Use the chart on page 119 to complete your own
Geologic Timeline in your notebook
•  Only record major geologic events
Create a song/rap/jingle
•  In your groups, create a song, rap or jingle
that identifies the major geologic events of
each of the four eras.