Understanding Earths Interior
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Transcript of Understanding Earths Interior
Understanding Earths Understanding Earths InteriorInterior
This Activity will allow you to This Activity will allow you to become familiar with the Earths become familiar with the Earths
layers and the process that occur layers and the process that occur within them.within them.
Click on the star to BeginClick on the star to Begin
Core
Follow-Up Exercise
CrustCrust Solid Solid
Composition: Oxygen, aluminum, Calcium, Composition: Oxygen, aluminum, Calcium, Iron, sodium, potassium, magnesium, Iron, sodium, potassium, magnesium, SiliconSilicon
5-40 km thick but has an average of 32 km5-40 km thick but has an average of 32 km
Earths CrustEarths Crust
http://www.dnr.sc.gov/geology/images/Earths_crust.gif
Earths crust is composed of a dozen plates covering earths surface. These dozen are either oceanic or continental crust.
Click on the star to continue…..Click on the star to continue…..
Core
MantleMantle 2800 km thick2800 km thick Is both Is both solidsolid and and liquid liquid Composition: Silicon, Oxygen, Composition: Silicon, Oxygen,
Iron, MagnesiumIron, Magnesium There are convection cells in the There are convection cells in the
mantle that cause important mantle that cause important forces on the surface.forces on the surface.
Next: What are convection Cells?
Click on Links to Watch Click on Links to Watch AnimationsAnimations
http://http://education.sdsc.edu/optiputer/flash/convection.hteducation.sdsc.edu/optiputer/flash/convection.htmm
http://www.manatee.k12.fl.us/sites/elementary/sahttp://www.manatee.k12.fl.us/sites/elementary/samoset/altconvection.htmmoset/altconvection.htm
Click on the star to Click on the star to continue……continue……
Core
CoreCore
Inner CoreInner Core Composition- Iron and Composition- Iron and
NickelNickel
1,200 km thick1,200 km thick
2000-5000 degrees Celsius2000-5000 degrees Celsius
SolidSolid, because of , because of enormous pressure of enormous pressure of overlying matteroverlying matter
The core is divided into two layer: the Inner and Outer core
Outer Core•Composition - Nickel and Iron
•870 degree Celsius
•2,250 km thick
•Liquid layer
Earth’s Magnetic FieldEarth’s Magnetic Field
www.gly.fsu.edu
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.
Quick QuizQuick 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 QuizQuick Quiz
Earth’s inner core is hotter and solid, while Earth’s inner core is hotter and solid, while the outer core is colder and liquid? Why the outer core is colder and liquid? Why is this?is this?
A.A. The inner core is made out of material The inner core is made out of material that resists heat better.that resists heat better.
B.B. The Outer core is not even solid, but is The Outer core is not even solid, but is liquid also. liquid also.
C.C. The inner cores overlying pressure The inner cores overlying pressure causes it stay solid. causes it stay solid.
Quick QuizQuick Quiz
Temperature increases with pressure, Temperature increases with pressure, then this layer has the lowest then this layer has the lowest pressure?pressure?
A.A. CoreCore
B.B. Crust Crust
C.C. MantleMantle
Quick QuizQuick Quiz
This is formed by movement of mantle This is formed by movement of mantle material?material?
A.A. Magnetic Field Magnetic Field
B.B. Convection CellsConvection Cells
C.C. Earths rotationEarths rotation
Follow-Up ExerciseFollow-Up Exercise
Click the Link to take you to ZOHO Click the Link to take you to ZOHO Meeting.Meeting.
Log on and join your group meeting Log on and join your group meeting and answer the questions.and answer the questions.
http://meeting.zoho.com/login.do?servihttp://meeting.zoho.com/login.do?serviceurl=%2Fhome.doceurl=%2Fhome.do
Back to Beginning
That is CorrectThat is Correct
That is SuperThat is Super
That is AwesomeThat is Awesome
You Nerd YouYou Nerd You
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