Exam Review Geology 1110.docx - Exam 1 Review Geology 1110...

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Exam 1 Review Geology 1110 Introduction What is a natural hazard?
How does population growth interact with natural hazard?
Understanding Earth Ways to learn about inside of the Earth Study volcano erupted materials Study DSDP (Deep Sea Drilling Project) cores Study gravitational fields Study Seismic waves Lab recreation of the Pressure/Temperature conditions Earth layers, what are they?
What are chemical (layers) compositions of each layer Crust <1% of Earth volume - Oceanic: Dense 3g/cm3. Thin 7-10km. Continental crust: Less dense 2.7g/cm3. Thicker 25-70km Mantle 84% of earth volume – 2900 km thick, 500, 900 degrees Celsius. 4000 degrees Celsius. Solid (physical). Silicate Core – Iron/ nickel alloy What are the physical (layers) properties of each layer Gas? liquid? solid? How bendable is it? Rheology Inner Core – Solid Outer Core –Liquid; Liquid metal movement produces Earth’s magnetic field. Hint: S-wave can’t travel through liquid Lower mantle, asthenosphere – Plastic, viscous, solid. Lithosphere – Crust + Upper most-mantle: Rigid, brittle Chemical vs. Physical Layers How is internal force (heat) combined with the structure of the Earth to initiate some “internal process” Label the diagram correctly
Continental vs. oceanic crust, which one is thicker, denser? Continental Crust: Thicker (25-70km), less dense (2.7 g/cm3) Oceanic Crust: Denser (3g/cm3), thin (7-10km) Continental drift, what is it? What are the supporting evidences?

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