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Objective: To identify the layers of Earth in order to describe the

structure of Earth.Earth Note: What is it like inside the Earth?

Drill: 1. Get a new Activity Sheet from the SET.

2. Complete Activity 1.

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Crust

Mantle

Outer Core

Inner Core

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LET’S PRETEND THAT WE ARE TAKING A TRIP…TO THE CENTER

OF THE EARTH!!!!!There are two main changes that will occur as we go deeper. What do you think they are? Discuss the question with your neighbor. Come up with a consensus?

1. The temperature increases. (Generated from the core.)

2. The pressure increases. (Due to weight of the Earth above)

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Activity 3: Journey to the Center of the Earth

Use the back of your paper to diagram the features of the Earth that you encounter as you travel deep into the Earth.

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CRUST

1.Outermost layer2.5 – 40 kilometers thick on

average)3.Oceanic crust is thinner (5 km)4.Oceanic crust – more dense

(basalt)5.Continental crust is thicker (up to

70km)6.Continental crust – less dense

(granite)

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Mohorovicic Discontinuity

1.The area separating the crust from the mantle.

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Mantle

1.Nearly 3000 kilometers thick.2.Most complicated layer3.Several different parts4.Uppermost is similar to the crust.5.Just below is a plastic-like flowing

layer.6.Lower mantle - solid

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Lithosphere

1.Composed of the crust and top part of the mantle.

2.Contains Earth’s moving plates3.About 75 - 100 kilometers thick

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Athenosphere

1.Just below the lithosphere2.Plastic-like layer of the mantle,

but still solid3.Responsible for plate movement4.Nearly 300 kilometers thick.5.Convection occurs here.

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Lower Mantle

1.Most of the mantle.2.Solid3.Extends to the core

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Outer Core

1.About 2300 kilometers thick.2.Liquid iron and nickel3.May be responsible for Earth’s

magnetic field

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Inner Core

1.About 1200 kilometers thick.2.Solid metallic layer – probably

iron plus3.Solid due to extreme pressure

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Homework: 1.Review information2.Identify Questions

Inside EarthDay 2

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Objective: To identify the layers of Earth in order to describe the

structure of Earth.

Earth Note: What is it like inside the Earth?

Drill: 1. Open your log book. 2. Write 2 quiz questions

with answers based on yesterday’s lesson.

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Let’s Review

1. Video2. Rap3. Brain Pop – Earth’

Layers4. Diagram

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Any Questions???

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SUMMARY DITTO

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HOMEWORK:

Assessment Ditto