September 29, 2008September 29, 2008

Today we will:Today we will:

11stst period period

• Review rock lab

• Complete USGS reading

• Complete 3 gizmo quizzes

• Rockhound! (rock creations, “quiz”)

• Rockhound Home Page

• Notes if time allows…layers of the earth

33rdrd PERIOD PERIOD

• Review rock lab

• Finish packet work

• Gizmo quizzes

• Rock hound

• Rockhound Home Page

44THTH AND 7 AND 7THTH PERIOD PERIOD

• Gizmo lab

• Complete 3 gizmos

• Rockhound

• Rockhound Home Page

September 30, 2008September 30, 2008

• Today we will:– Make an inference referencing the picture– Devils Tower National Monument - Wikipedia

, the free encyclopedia– Show you the rock hound website– Review packet work– Eating activity– Review for test on rocks– Start layers of the earth

– Homework: chapter 3 test tomorrow!!!

What does each represent and What does each represent and why?why?

• Hershey kiss:• Igneous melts in your mouth• Starburst: • METAMORPHIC• heat and pressure only changes it, not melts it• Cracker, fluff, sprinkles, gummies:• Sedimentary rock full of layers of sediments!

REVIEWREVIEW

• PAGE 105 12-19, 22

• PAGE 106 23-26

The Layers of the EarthThe Layers of the Earth

• I want you to learn:

1.Position

2.Composition

3.Density

Inner CoreInner Core

• Solid

• Most dense

• Iron and nickel

• (Location draw picture from board)

The “why’s”The “why’s”

• Why is it solid?

• The intense pressure does not allow molecules to spread apart

• Why is it in the middle of the earth?

• It is so packed full of material, it sinks to the middle

Outer CoreOuter Core

• Liquid

• Less dense than inner core

• Iron and nickel

The “Why’s”The “Why’s”

• Why is the outer core liquid?

• It’s intensely hot!!!, not enough pressure to be solid

• Closer to surface than inner core, so it’s less dense

MantleMantle

• Thickest layer

• Plasticlike, not quite liquid, not quite solid

• Almost “gooey”

• Less dense than inner and outer core

CrustCrust

• Outer skin of earth

• Includes dry land and ocean floor

• Continental crust: crust not covered with ocean water

• Oceanic Crust: crust covered with ocean water

• Least dense of all layers! So it seems to float….

Lithosphere vs. AsthenosphereLithosphere vs. Asthenosphere

• Lithosphere:

• Top sub layer

• Includes both continental and oceanic crust

• Top portion of mantle and the crust equals the lithosphere

AsthenosphereAsthenosphere

• Sub layer

most ooey-gooey portion of mantle

10/3 Today we will…10/3 Today we will…

• Review notes

• Take short open note quiz on basic layers of earth

• Review new (8th grade terms) vocab to describe the layers of earth

• WORKSHEET ON CONVECTION

Quiz #8Quiz #8

• 1. Which of the four layers is the thickest?• 2. Which of the four layers is at the center

of the earth?• 3. Which of the four layers is the most

dense?• 4. Which of the four layers is the least

dense?• 5. What phase of matter is the inner core

in?

Oceanic vs. Continental crustOceanic vs. Continental crust

• Crust covers the entire surface of earth

• Some of the crust is under large bodies of water, some is not.

• Can you determine which is which?

Oceanic Oceanic

• Thinner than continental crust

• Very dense

• Under ocean water

Continental crustContinental crust

• Thicker than oceanic layer

• Land

• Not as dense as oceanic….

• Why?

What happens to hot air????What happens to hot air????Convection Cells/currentsConvection Cells/currents

• Hot air ___________

• As it rises, it ___________

• Then that cool air __________

• It gets closer to surface of earth so it ___________up

• Then it _____________

• This is called a _________________

Worksheet!!!Worksheet!!!

• LET’S RELATE THE CONCEPT OF HOT AIR RISES AND COOL AIR SINKS TO THAT OF MATERIAL IN THE MANTLE….

• APPLY WORKSHEET. USE PARTNERS.

Quick animationQuick animation

• Mantle Convection | Flash simulation, Animation, Illustration, Picture, Diagram – eduMedia

The Joke for 7The Joke for 7thth period period

• Two Geologists are walking across a granite outcrop one day. The first says to the second

• - "Hey, this terrain is unmetamorphosed". Replies the second one, -

• "No Schist".• GET IT, SCHIST IS METAMORPHIC ROCK

AND GRANITE IS IGNEOUS.