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Layers of the Earth
Key Term Review
Inner Core: Innermost, densest, hottest, mostly Fe.
Outer Core: Mostly Fe, surrounds inner core, liquid.
Lower Mantle: Thickest layer, ultra heavy rock.
Upper Mantle: Part of lithosphere, brittle.
Crust: You live on it, relatively paper thin, brittle, least dense, floats on mantle.
Lithosphere: Solid part of Earth.
Asthenosphere: Layer of deformable rock below the lithosphere.
Modeling
1. Using the information from the Powerpoint presentation, the model, and your
book, fill in the table below:
The Layers of the Earth
Layer
Thickness
2. Which layer do we live on? _______________________
3. What layer is directly below your answer above? _______________________
4. What is the thickest layer? ______________________
5. Which layers are in included in the lithosphere? ______________ and _______________
6. The Earth’s inner core is made up of mainly ___________ and _____________
Apply Your Knowledge
Like an egg, Earth has a core, a layer surrounding the core, and a thin, hard outer
layer. Which layers of the Earth match the layers of an egg?