Post on 17-Jan-2016
Warm Up - Partner
1) How thick is the Crust, Mantle, and Core.2) Based on the thickness of the layers, use a
real life example to demonstrate the thickness of each layer. Example: The ladder is 40 ft long or roughly two stories tall.
4.1 Layers of the Earth and Convection
Objective:• SWBAT identify the layers
of the Earth and explain the various mechanisms that drive movement of lithospheric plates
• HW- Finish your layers foldable
Agenda:• Warm Up• Objective• Guided Notes• Videos• Earth foldable• Exit Ticket
PUTTING IT ALL TOGETHER!
• WHY ARE WE LEARNING THIS?• SWBAT identify the layers of the Earth by
name, composition, thickness & density
• SWBAT explain the 3 different movements of tectonic plates & the mechanism causing such movements.
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Slices of the Earth Scale Model
Directions• Pass out
Color GuideLayer Color
Crust Green
Lithosphere Brown
Upper-Mantle Yellow
Lower-Mantle Yellow – Orange
Outer Core Orange
Inner Core Red
What did the world look like 1 million years ago?
Draw and Label the Following Diagram
Inner Core1200 km = 745 miles Miami to Charlotte
Outer Core2250km = 1398 miles Miami to NYC
Mantle2900 km = 1802 miles Miami to the tip of maine
Composition:Magma/Rock
State of Matter: Semi-Solid
Crust
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CONTINENTAL• Older• Less Dense than Oceanic Crust• Thicker
OCEANIC • Younger• Mores dense than Continental Crust• Covered by water• Forms when plates separate
Crust31.15 km = 19.36 miles Carowinds to UNCC
LITHOSPHERE– What is it?
• Combination of BOTH Crust & Upper Mantle
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Critical ThinkingWhiteboards
INFER: What makes hot air balloons rise??
The entire surface of the earth is divided into tectonic plates that are constantly moving.
How do they move??
Convection• The transfer of heat in the
asthenosphere due to unequal heating from the core as magma heats up and rises, then cools down and sinks
• Moves the tectonic plates
Critical ThinkingWhiteboard
What is the connection between convection in the Earth’s Layers and Hot Air Balloons?
Density
Which box is more dense?
Now, which is more dense?
What is density?
D = m/v• D = Density• m = mass• V = volume
White Board Activity
Question: How does density relate to the layers of the Earth?• Layers are divided by density.Question: How fast are the continents moving apart?• Roughly 1.5 cm/year
What would your reaction be…
When you are cold?
When you are hot?
Cold = fold arms, get close to someone, or rap in a blanket.Hot = less clothes, more spaced out, and don’t want to be as close to other people.
Same goes for particles
How do particles change when they are cold and hot?
Colder particles Hotter particles
Cold objects: More dense Warm objects: Less Dense
Real World Application
DEMO
• Convection Currents (two colors)
• Floating Plate (fish tank with floating plate)
Exit Ticket
1. What is convection?2. In which layer does convection take place?3. What is the heat source for convection?4. What layer makes up the tectonic plates?5. What layer of the earth is the most dense?6. What layer of the earth is the least dense?