1. Earth Layers
Key Term Descriptions

2. Crust
Items to help you remember…. A) B) C) D)

3. CRUST
MADE OF 2 PARTS…
A)CONTINENTAL CRUST-CONTINENTS, ROCKS, SOIL=GRANITE
B)OCEANIC CRUST=MORE DENSE, SINKS UNDER CONTINENTAL CRUST=BASALT
C) LESS THAN 1% EARTH’S MASS
D) COMPOSITIONAL LAYER=ALUMINUM, SILICON, OXYGEN

4. Mantle
Items to help you remember… A) B) C)

5. MANTLE MADE OF 3 PARTS… COMPOSITIONAL LAYER A)LITHOSPHERE
B)ASTHENOSPHERE
C)MESOSPHERE
***REMEMBER “LAM”
MOST MASSIVE LAYER OF EARTH=67%
VOLCANOES UNDERWATER HERE

6. Part of mantle and crust..Lithosphere
Items to help you remember… A) B) C)

7. LITHOSPHERE PART OF CRUST AND MANTLE
TECTONIC PLATES FOUND HERE..PIECES
THESE TECTONIC PLATES/PIECES OF THE LITHOSPHERE “FLOAT” ON TOP OF ASTHENOSPHERE
PHYSICAL LAYER OF EARTH…
“PH” IN LITHOSPHERE=PHYSICAL

8. Middle part of mantle..Asthenosphere
items to help you remember… A) B) C)

9. ASTHENOSPHERE MIDDLE PART OF MANTLE
PLASTIC, SOFT LAYER(THINK-LAFFY TAFFY)
TECTONIC PLATES FLOAT ON TOP OF ASTHENOSPHERE
“PH” IN ASTHENOSPHERE=PHYSICAL LAYER OF EARTH

10. Lower part of mantle..MesosphereB) C)

11. MESOSPHERE LOWER PART OF MANTLE STRONG PART OF MANTLE
THICKEST, BIGGEST PART OF MANTLE
“PH” IN MESOSPHERE=PHYSICAL LAYER OD EARTH

12. The Core…
Item to remember… A)

13. CORE COMPOSITIONAL LAYER OF EARTH.. CONTAINS 2 PARTS.. A) OUTER CORE
B)INNER CORE
33% OF EARTH’S MASS
HOT, HOT, HOT-HIGH TEMPS

14. Outer Core…
Items to help you remember.. A) B)

15. OUTER CORE PHYSICAL LAYER OF EARTH LIQUID PART
MADE OF MAINLYNICKEL AND IRON

16. Inner Core..
Items to help you remember… A) B)

17. INNER CORE PHYSICAL LAYER OF EARTH SOLID PART
MADE MAINLY OF NICKEL AND IRON

18. Bonus Wrap up
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