Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Class notes: Earth`s Interior
Document related concepts
Schiehallion experiment wikipedia , lookup
History of geomagnetism wikipedia , lookup
Spherical Earth wikipedia , lookup
Geochemistry wikipedia , lookup
History of Earth wikipedia , lookup
Large igneous province wikipedia , lookup
Future of Earth wikipedia , lookup
History of geodesy wikipedia , lookup
History of geology wikipedia , lookup
Age of the Earth wikipedia , lookup
Transcript
Class Notes: Earth's Interior Key Terms: Lithosphere Asthenosphere MOHO EARTH’S INTERIOR Seismic waves are used to study the interior of the Earth They show several layers or zones inside Earth (Similar to X-rays) The deepest drill hole on Earth is only 12-16 km Less than 0.2 % of the distance to the core Layers of the Earth (See ESRT page 10) 1. Crust Outer solid layer of Earth, made of mostly of rocks and minerals Includes soil and eroded rock Two types of crust: Oceanic Continental Basalt Granite more dense less dense (3.0 g/cm3) (2.7 g/cm3) thinner thicker darker (Mafic) lighter (Felsic) The crust and the uppermost mantle are called the lithosphere 2. Mantle Middle layer, solid, plastic like (silly putty) Thickest zone (80 % of Earth’s volume) Moho - boundary between crust & mantle Asthenosphere - Outer portion of mantle Liquid rock/Plastic like Temperature and Melting point are equal, which indicates partial melting Convection cells in the asthenosphere cause the lithosphere to move around 3. Core Composed mostly of Iron & Nickel Most dense layers & Hottest Outer core is liquid (9.9 - 12.1 g/cm3) Inner core is solid (12.7 - 13.0 g/cm3)
