The layers of what makes up our earth .

1. CHAPTER 2 SECTION 1
The Earth Inside and Out

2. THE SOLAR SYSTEM
Consists of
the sun and 8
regular
planets

3. STRUCTURE OF THE EARTH: INSIDE
Core: center of earth
Made of iron and nickel
Outer core is liquid
Inner core is solid
Mantle: Several layers surrounding core
Contains most of the earth’s mass
Crust: Thin layer of rock at earth’s surface
Magma: molten rock in mantle or crust

4. STRUCTURE OF THE EARTH: INSIDE

5. STRUCTURE OF THE EARTH: ON AND ABOVE
Atmosphere: layer of gases surrounding earth
Contains oxygen we breathe
Protects earth from radiation and space debris
Provides medium for weather and climate

6. STRUCTURE OF THE EARTH: ON AND ABOVE
Lithosphere: Solid rock portion of the earth
Includes crust and uppermost mantle
Forms seafloor under the ocean

7. STRUCTURE OF THE EARTH: ON AND ABOVE
Hydrosphere: made up of water elements on the earth
Includes oceans, seas, rivers, lakes, and water in
atmosphere
Biosphere: atmosphere, lithosphere, hydrosphere combined
Where plants and animals live

8. STRUCTURE OF THE EARTH: ON AND ABOVE

9. CONTINENTAL DRIFT
Presented in 1912 by German scientist Alfred
Wegener
Said earth was once supercontinent that divided
slowly over millions of years
Supercontinent- PANGAEA- Greek for “all
earth”
Seafloor spreading confirmed continental drift
New crust in middle of ocean , pushing
continents apart

10. CONTINENTAL DRIFT