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Earth's Interior Chapter 1, Section 1 By Rachel Gu, Coni Foehl, John Regan, Arash Boostani, and Nicholas Kim Exploring Inside the Earth ● ● ● ● Surface constantly changing Extreme conditions prevent exploration Heat increases as you go deeper Pressure increases as you go deeper Scientific Evidence ● Evidence from rock samples ● Rocks give clues about earth structure and conditions deep inside earth ● Evidence from seismic waves ● When earthquakes occur:geologists study how they travel through earth ● Speed of seismic waves and the path they take show the structure of earth The Crust ● ● ● ● ● ● Layer of rock that forms outer skin Includes dry land and ocean floor Between 5-40 km thick Thinnest layer Ocean crust: Basalt Continental crust: Granite The Mantle ● Made of very hot rock that is solid ● 3000 meters thick ● Lithosphere: Upper most part of mantle that is similar to crust (100 km thick) ● Asthenosphere: Rocks are less rigid than in Lithosphere and it can bend like plastic but it is still solid ● The Lower mantle is made of solid material extends to the core The Core ● ● ● ● Mostly made of iron and nickel Outer Core: Layer of molten metal Inner core: Dense ball of metal The core has to do with the earth magnetic field Vocab Seismic Waves: Vibrations that travel through Earth carrying the energy released during an earthquake Crust: The layer of rock that forms Earth’s outer surface Mantle: The layer of hot, solid material between Earth’s crust and core Outer Core: A layer of molten iron and nickel that surrounds the inner core of Earth Inner Core: A dense sphere of a solid iron and nickel the center of Earth Pressure: The force exerted on a surface divided by the area over which the force is exerted Lithosphere: The uppermost part of the mantle and crust Asthenosphere: Soft layer of mantle URL home slide : http://4.bp.blogspot.com/-swfMo5xKvM0/UApFnFaj8YI/AAAAAAAAMQQ/E9W2TK-JM8s/s1600/angkasa.jpg slide 4 :http://kingstonhouseofpizza.com/wp-content/uploads/2013/04/Pizza-Wallpaper-pizza-6333801-1024-768.jpg the end slide:http://s3.amazonaws.com/rapgenius/1337584925_peace-sign-coloring-pages-31.gif scientific evidence : http://www.cyberphysics.co.uk/graphics/diagrams/Earth/shadow_p_s.gif THE END Graphics by: Arash Boostani Text by: Rachel Gu Research by: John Regan Vocab by: Nicholas Kim Commentary by: Coni Foehl
