1. Inside the Earth

2. Composition (What it is made of)
Crust
Mantle
Core

3. The Crust Outer layer 5-100 km thick 2 types of crust
Oceanic (very dense, made of basalt)
Continental (less dense, made of granite)

4. Oceanic and Continental Crust

5. The Mantle
Middle layer
Very thick layer

6. The Core
Made mostly of iron
1/3 of the earth’s mass
Very hot

7. Earth’s Layers How are the earth’s layers similar to an egg?
Shell=crust
Egg white=mantle
Yolk=core

8. Physical Structure of the Earth (5 Layers)
Lithosphere- rigid outer layer (crust)
Asthenosphere- solid rock that flows slowly (like hot asphalt)
Mesosphere- middle layer
Outer Core- liquid layer
Inner Core- solid, very dense

9. Tectonic Plates Earth’s crust is broken into about 19 pieces
These plates move on top of the asthenosphere

10. TYPES OF ROCKS
Igneous
Sedimentary
Metamorphic

11. IGNEOUS ROCKS
Formed from molten material including volcanic lava, ash, or bombs as well as magma below Earth’s surface

12. TYPES OF IGNEOUS ROCKS
BASALT
GRANITE

13. SEDIMENTARY ROCKS
Made of layers that have been pressed or cemented together
Pebbles, sand, silt, or clay are sediments
Shells and bones can also be sediments

14. TYPES OF SEDIMENTARY ROCKS
LIMESTONE
SHALE
COAL

15. METAMORPHIC ROCKS
Rocks that are changed by intense heat and pressure while inside Earth’s surface
Igneous, sedimentary, and even metamorphic rocks can be changed into different metamorphic rocks

16. TYPES OF METAMORPHIC ROCKS
SLATE
MARBLE

17. ROCK CYCLE
The rock cycle is a never-ending process of rocks forming, weathering, and changing into other rocks

18. ROCK CYCLE