Transcript Stand Alone Powerpoint Activity: Earths Interior

Understanding Earths Interior
This Activity will allow you to become
familiar with the Earths layers and the
process that occur within them.
Click on the star to Begin
Core
Follow-Up Exercise
Crust
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Solid
Composition: Oxygen, aluminum, Calcium, Iron,
sodium, potassium, magnesium, Silicon
5-40 km thick but has an average of 32 km
Earths Crust
Earths crust is composed of a
dozen plates covering earths
surface. These dozen are either
oceanic or continental crust.
http://www.dnr.sc.gov/geology/image
s/Earths_crust.gif
Click on the star to continue…..
Core
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Mantle
2800 km thick
Is both solid and liquid
Composition: Silicon, Oxygen, Iron,
Magnesium
There are convection cells in the
mantle that cause important forces on
the surface.
Next: What are convection Cells?
Click on Links to Watch
Animations
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http://education.sdsc.edu/optiputer/flash/convection.htm
http://www.manatee.k12.fl.us/sites/elementary/samoset
/altconvection.htm
Click on the star to continue……
Core
Core
The core is divided into two layer: the Inner and Outer core
Inner Core
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Composition- Iron and Nickel
1,200 km thick
Outer Core
•Composition - Nickel and Iron
•870 degree Celsius
•2,250 km thick
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2000-5000 degrees Celsius
•Liquid layer
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Solid, because of enormous
pressure of overlying matter
Earth’s Magnetic Field
Earth’s rotation causing
the liquid iron outer core to
spin around the solid iron
inner core is believed to
cause the formation of
Earth’s Magnetic Field.
www.gly.fsu.edu
Quick Quiz
Earths crust is divided into two types.
They are?
A. Surface and continental
B. Continental and Oceanic
C. Oceanic and Mantle
D. Mantle and Surface
Quick Quiz
Earth’s inner core is hotter and solid, while the
outer core is colder and liquid? Why is this?
A. The inner core is made out of material that
resists heat better.
B. The Outer core is not even solid, but is liquid
also.
C. The inner cores overlying pressure causes it
stay solid.
Quick Quiz
Temperature increases with pressure, then
this layer has the lowest pressure?
A. Core
B. Crust
C. Mantle
Quick Quiz
This is formed by movement of mantle
material?
A. Magnetic Field
B. Convection Cells
C. Earths rotation
Follow-Up Exercise
Click the Link to take you to ZOHO Meeting.
Log on and join your group meeting and
answer the questions.
http://meeting.zoho.com/login.do?serviceurl
=%2Fhome.do
Back to
Beginning
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