No topic required Assignment Example | Topics and Well Written Essays - 250 words - 1

No topic required - Assignment Example (0.5pt) c) List the three most fatal volcanic hazards and give a short (one line or less) description of each (1.5pts) (3.5pts total) c. (1) pyroclastic flows – high speed avalanches of hot ash, rock fragments, and gas that move down the sides of the volcano during explosive eruptions. (2) Lava flows – molten rocks that flow out of the volcanic vent. (3) Tsunamis – a long period seismic generated by a sudden displacement of water. 3) a) What are the three Vs that a volcanic eruption depends on? b) What is the difference between magma and lava? c) Increasing magma’s viscosity increases or decreases its explosiveness? d) As sea floor spreads, new magma from the asthenosphere gets to the surface and drifts apart. Where does this type of process occur? (2 pts.; 0.5 each) 6) Earth Watch (March 26, 2012): An earthquake rocked the southwestern states of Mexico. a) What was the magnitude of this earthquake? (0.5 pts) b) Earth movements were felt in Indonesia as well with earthquakes of magnitude 6.2. Using the tables in book chapter 5, approximately how much less energy did this earthquake release compared to the one felt in Mexico? (1 pt.) c) New Zealand’s North Island also felt some movement with earthquakes of magnitude 4.7. Approximately, how much less energy did this earthquake release compared to the one in Mexico? (1pt) (2.5pts total) 7) Google Earth: Download the KMZ file titled Yellowstone from the class website and open the file in Google Earth. The names of the three most recent Yellowstone eruptions are labeled in blue with their ages (Ma is short for millions of years ago) and the extent of the ash fall from each eruption is diagramed by the three different red colors. a) What are the names of the three eruptions? How long ago was each eruption? (3pts) Using the Fly to option search for UCSD and locate it with respect to the Modern Yellowstone Caldera Rim. As in Homework 1, use the ruler tool to find