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

AHHHH Try Again!!!!!!AHHHH Try Again!!!!!!