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Earth’s Interior

Earth’s Interior. Interior=inside. Geologist. A geologist is a scientist that studies the forces that shape earth’s surface 200 years ago was the start of geology Geology is fairly new. Rock. The material that forms Earth’s surface Geologists study rocks. Forces that shape Earth.

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Earth’s Interior

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  1. Earth’s Interior Interior=inside

  2. Geologist • A geologist is a scientist that studies the forces that shape earth’s surface • 200 years ago was the start of geology • Geology is fairly new

  3. Rock • The material that forms Earth’s surface • Geologists study rocks

  4. Forces that shape Earth • Constructive • Destructive

  5. Constructive • Building up Ex. Construction The building (MS) was changed constructively.

  6. Constructive • Mountain ranges forming(slowly) • Over millions of years

  7. Destructive • Forces that slowly wear down the Earth’s surface • Destroy =Destruction

  8. Destructive • Erosion by wind and water • Think of our local beaches

  9. Journey to the Center of the Earth • Temperature increases • Pressure increases

  10. How do we know what inside Earth is like if we can’t travel through it? • Scientist know this by studying seismic waves/data from earthquakes

  11. If you took that journey you would find layers of the Earth • Crust • Mantel • Core

  12. Crust • “skin” of earth • Like the shell of an egg or onion skin • VERY THIN!!!!!! • Includes land on bottom of ocean floor • Thinnest under the ocean(basalt) • Thickest under mountains(granite) • Is part of the lithosphere • Most abundant element oxygen then silicon

  13. Lithosphere • Lithosphere means stone • Crust and uppermost mantle • Rigid • Contains plates

  14. Oceanic vs. Continental Crust

  15. Asthenosphere • Gooey/bendable • Plastic like rock • Convection take place here • Found in Upper mantle only • NOT A LIQUID!!!! • SOLID

  16. Mantle • A layer of hot rock • is also part of the lithosphere

  17. Core Center of the Earth) • Inner core • Outer core

  18. Outer core • Acts like a thick liquid

  19. Inner Core • dense ball of solid metal • Heat source for convection • Hotter than the sun • Spins-creates earth’s magnetic shield

  20. The Lithosphere Crust and uppermost mantle Floats on the asthenosphere Broken into pieces- tectonic plates

  21. Crust • Crust part of the (Lithosphere) • Continental • Less dense • Oceanic • More dense

  22. Mantle • Upper Mantle called the asthenosphere

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