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The Earth’s Interior. Glencoe Ch. 12-3 Pages 370-372. A look inside the Earth. E a r t h’ s C r o s s - s e c t i o n. Layers of the Earth. Crust –________________ and __________________ layer  2 types of crust. Layers of the Earth.

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The earth s interior

The Earth’s Interior

Glencoe Ch. 12-3

Pages 370-372



E a r t h s c r o s s s e c t i o n
Earth’sCross-section


Layers of the earth
Layers of the Earth

  • Crust –________________ and

    __________________ layer

     2 types

    of crust


Layers of the earth1
Layers of the Earth

1. Oceanic crust – under ______________, 4-7 km thick (high density)

2. _____________________ crust – under

continents, ___-____ km (lighter in density)


E a r t h s c r o s s s e c t i o n1
Earth’sCross-section


Layers of the earth2
Layers of the Earth

- Mantle – _____________ km thick - rock

- Upper mantle – ________________ rock (closer to surface)

- ________________ mantle – plastic rock (___________ magma)


Layers of the earth3
Layers of the Earth

Lithosphere – _____ and solid upper mantle

 solid and rocky

  • Asthenosphere – soft and plastic __________mantle

    _______, _______, ________ rock and magma



Layers of the earth5
Layers of the Earth

- _______________ – the innermost / center of the Earth

- thought to be made of ___________ and ______________

1. Outer core – _______________ metal

2. Inner core – _______________ metal


E a r t h s c r o s s s e c t i o n2
Earth’sCross-section


Layers of the earth6
Layers of the Earth

- As you go toward the Earth’s core the temperature steadily ______________

- Evidence –

1. Radioactive decay of unstable _______

2. Heated liquid rock in mantle

3. Heated solid and liquid metal in core

heat is radiated outward toward the

surface


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