Transcript Earth`s Interior Introduction

The Earth’s Interior
Glencoe Ch. 12-3
Pages 370-372
A look inside the Earth
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Layers of the Earth
- Crust –________________ and
__________________ layer
 2 types
of crust
Layers of the Earth
1. Oceanic crust – under ______________,
4-7 km thick (high density)
2. _____________________ crust – under
continents, ___-____ km (lighter in density)
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Layers of the Earth
- Mantle – _____________ km thick - rock
- Upper mantle – ________________ rock
(closer to surface)
- ________________ mantle – plastic rock
(___________ magma)
Layers of the Earth
Lithosphere – _____ and solid upper mantle
 solid and rocky
• Asthenosphere – soft and plastic
__________mantle
_______, _______, ________ rock and
magma
Layers of the Earth
Layers of the Earth
- _______________ – the innermost / center
of the Earth
- thought to be made of ___________ and
______________
1. Outer core – _______________ metal
2. Inner core – _______________ metal
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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