Transcript pptx: A JOURNEY TO THE CENTER OF THE EARTH

Bellwork:
• Can we dig a hole to China?
• Why or why not?
1.
2.
3.
New Unit: Earth’s Interior
• Properties of the Layers of the Earth
• Results of the unique properties of Earth’s
interior
– Earth’s Magnetic Field
– Convection and Plate Tectonics
• How was the Earth formed?
•How do scientists study the Earth’s interior?
•Why should we care what’s inside the Earth?
•What are the layers of the Earth like?
How was the Earth formed?
• Presentación
A young
Earth
moments
after a
collision
with a
Mars-sized
planetoid
over four
billion years
ago.
© American Museum of
Natural History
How do scientist study the
Earth’s interior?
• Think-Pair-Share in Table Groups
How was the Earth formed?
• Many geologists
believe that as the
Earth cooled the
heavier, denser
materials sank to
the center and the
lighter materials
rose to the top.
How do scientists study the Earth’s interior?
1. Studying how earthquake waves move through the
Earth.
2. Chemical analysis of lava and rock that have come to
the surface of the Earth.
3. Modeling the Earth’s magnetic field.
What are the layers of the Earth like?
Properties of Earth’s Layers
Jigsaw Activity: Part 1
Group 1: Distance
Group 2: Density
PROPERTY GROUPS
Group 3:
Phase Characteristics
Group 4:
Temperature &
Pressure
Group 5.
Unique Properties
Goals:
• Collect data about properties of the layers.
• Share information with your original Earth Group.
Properties of Earth’s Layers
Jigsaw Activity: Part 2
LAYER GROUPS
Lithosphere
Asthenosphere
Lower Mantle
Outer Core
Inner Core
Center
Goals:
• Create an “Earth Table” describing the layers’ properties.
• Each group will guide us through a tour of one layer of the
Earth.
TO DO: Part 1
• Get into your “Property Groups”
• Assign roles in groups
• Organizer/leader; action taker/doer; data keeper
• Gather and record data
• Complete worksheet and answer your property
questions
IF YOU FINISH EARLY:
1. switch property groups
2. answer challenge questions
TO DO:
• Get in to Layer Groups
– Share your property data thoroughly with your
layer group
– Record your information in the Earth Table
• Make sure that everyone in your group
has a full set of data
Earth Table
Stop
#
Name
Depth
to base of layer
(miles)
Material
(composition)
Density
(g/cm3)
Pressure
(MPa)
Phase
(s,l,p,g)
Temp.
(°C)
Earth’s Surface
0
Atmosphere &
Sediments
0.001 &
1.5
0.1
Gas & Solid
10
Deepest Drill Hole
7.5
Granitic Rock
2.7
360
Solid
200
Crust
22
Mafic Rock &
Olivine-rich Rock
3.0
1,100
Solid
600
1
Lithosphere
(crust + upper
mantle)
2
Asthenosphere
(middle mantle)
3
Lower Mantle
4
Outer Core
5
Inner Core
6
Center of the Earth