Post on 21-Jan-2016
The Layers of the The Layers of the Earth!Earth!
Vocabulary wordsVocabulary words
• Earth
• Crust
• Mantle
• outer core
• inner core
• Lithosphere
• asthenosphere
Day 1Day 1
• B: Earth Layer’s pre-assessment
• D: Earth Layers notes
• A: Exit Slip
Earth LayersEarth Layers
• The Earth is divided into four main layers.
1.Inner Core2.Outer Core3.Mantle 4.Crust
The CrustThe Crust• The crust is the
outermost layer of the Earth.
• This crust is not a solid shell. It is broken up into huge, thick plates that drift on top of the soft, underlying mantle.
• It is made of oxygen, silicon, aluminum.
Two Types of CrustTwo Types of Crust
• Continental crust is the crust the makes up the continents. It is thicker and older than oceanic crust.
• Oceanic crust is the crust below the oceans. It is thinner and younger than the continental crust.
• Example:
The MantleThe Mantle• The mantle is the
layer of Earth between the crust and the core.
• ● It contains most of the Earth’s mass.
• ● It has more magnesium and less aluminum and silicon than the crust.
• ● The mantle is denser than the crust.
The mantle divided into 2 parts:The mantle divided into 2 parts:
• Upper mantleUpper mantle • Lower mantleLower mantle..
Sub Layers of the MantleSub Layers of the Mantle
1. LITHOSPHERE: This is the “crunchy” layer of the Earth. It includes the crust and the very uppermost part of
the upper Mantle.
2. ASTHENOSPHERE: Soft – can bend like plastic, layer in the upper
portion of the mantle. It is located right below the Lithosphere. Lithosphere floats on this layer (like jello)
Day 2Day 2
The coreThe core
• CORECORE: : (Egg Yolk)(Egg Yolk)• Located below the Mantle.Located below the Mantle.
• It is divided into 2 layersIt is divided into 2 layers• Outer Core Outer Core
• Inner CoreInner Core
Outer CoreOuter Core• Is liquid and is
made up of mostly iron (easily magnetized)
• The movement of materials in the liquid O.C. is inferred to be the cause of Earth’s magnetic field!
• The O.C. is about 2250 km thick.
Inner CoreInner Core• Is the center of the
Earth – 1200 km thick.
• It’s solid iron and nickel. Most dense layer (heaviest)
• The increased pressure causes the I.C. to be solid
Students: Draw this illustration.Students: Draw this illustration.
Exit Slip:Exit Slip:
1) What are the four layers of the Earth?
2) The Earth’s crust is very ______?
3) The mantle is the largest layer of the Earth? True or False
4) Is the Outer Core a liquid or a solid?
Answers!Answers!
1) Crust, Mantle, Outer Core, Inner Core
2) Thin3) True4) Liquid
Day 3Day 3
• B: EGG demonstration
• D: Play Bill Nye video with worksheet
• Link to video: https://www.youtube.com/watch?v=Av-tvSxnS_A
• A: Compare notes
After the video:After the video:
• After the video list 3 things you know now because of the video that you did not know before:
• 1.
• 2.
• 3.
Day 3 (optional)Day 3 (optional)
• The ppt may take 2 days so I left this as a “catch up”/optional day.
• Before: Read Magic school bus “Inside the Earth”
• During: Earth’s layers foldable
• After: Complete the foldable and keep as a study guide